Current K4 Production Software

K4 Production Software (Release 34)  September 15, 2023

• K4 software updates are handled at the radio itself.  An ethernet connection is required to obtain new software. It is also possible to load (or re-load) software from a USB flash drive. For further information on that topic, please refer to the K4 Operating Manual.
• The K4 provides new features via software. As a result, you should consider the Release Notes as an extension of the Owners Manual. Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next manual revision is released.
• K4 production software release notes appear below, followed by release notes for the present beta release.

============================================================
====================== R34 (PRODUCTION) ====================
============================================================

Sept. 15, 2023


----
NOTE
----

The release notes below are a merge of all R33 beta 1/2/3/4 release notes, showing everything that has changed since the R33 production release.


------------
NEW FEATURES
------------

- SUPPLY OVER-VOLTAGE MEASUREMENT: If the K4's supply voltage is found to be excessive, an alert will be displayed. If the condition persists, the radio will be powered off for safety purposes. Note: Max supply voltage is specified as 15 V.

- ADDED "TX MONITOR METHOD, VOICE" menu entry: When this menu entry is set to "Fast", all speech processing effects and delays are removed from the voice monitor.

- UPDATED BUILT-IN OPERATING MANUAL TO REV C29: This edition includes a number of corrections suggested by K4 users.

- AGC SPEED SETTINGS: AGC speed (slow/fast) is now correctly stored per-mode rather than per-VFO or per-band. (Also see related bug fix below.)

- NEW APF BANDWIDTH: The CW audio peaking filter now has three settings: 30, 50, and 150 Hz. The new 150 Hz setting allows APF to be used with faster code speeds.

- THREE QSK METHODS: The TX QSK Method menu entry now has three settings. Method 1 is unchanged from the last production release; it uses slightly longer mute times to create the cleanest possible QSK. Method 2 is the same as the original, except that it uses a new DSP algorithm that results in a bit more recovered audio. Method 3 is is the same as Method 2, except that some users report that it provides reduced artifacts (as compared to Method 2) when using the internal keyer at speeds of 47 WPM or higher. NOTE: With all three settings, the primary goal is to eliminate "clicks," "thumps," or other artifacts that may occur when operating near very strong signals (S9+). Such a signal must be present within +/- 2 kHz of the K4's VFO setting in order to evaluate the various QSK methods. Otherwise there are no artifacts at all.


---------
BUG FIXES
---------

- "NO RECORDED MESSAGE" BUG: When doing AF RECord, this message would be displayed if the recording filled the 90-second buffer.

- MESSAGE CHAIN/REPEAT FIX: CW/FSK/PSK chained and repeated messages are now correctly spaced.

- DETECTION OF ESC ON LOCAL KEYBOARD: With a local keyboard plugged into the K4 for TX text entry, the ESC key now properly terminates messages.

- DIV LED now turns on if diversity is in effect at power-on.

- SOFTWARE UPDATE FIX: 'Check for Updates' now correctly updates all release selections with the latest revision numbers.

- TRANSMIT STATUS INFORMATION FIXED: Previously, in some cases power output would be displayed incorrectly, e.g. showing a nonzero value during receive.

- MSG REPEAT TRUNCATION FIXED: Previously, repeating a message with more than 24 characters would result in truncation of some portion of the message. Messages can now be up to 60 characters.

- ELIMINATED "MOTORBOATING" (4 Hz cycling of transmitter when MIC gain = 80).

- ELIMINATED VOICE MODE POWER SPIKES: Previously, asserting PTT could lead to a brief spike in output power ahead of normal transmit audio.

- XVTR CONFIGURATION: Transverter configurations are now correctly maintained after software updates.

- XVTR QUICK MEMORIES: These now function correctly.

- DVR "NO RECORDED MESSAGE" bug fixed.

- DVR VOICE MESSAGE PLAYBACK CLICKS: The beginning and ending of buffers are now truncated by 21 ms to help mask any mic clicks recorded in the message.

- DVR CHAINING: Sometimes when chaining multiple messages, one of them may not have played, but the radio would have stay keyed up for the remaining time as if it were playing.

- AGC SETTINGS: A/B VFO swaps and copies no longer result in loss of the operator's AGC speed setting. Similarly, settings are no longer lost when the text decoder is used.

- TX ANTENNA SELECTION: TX ANT settings that are invalid, such as XV OUT on an HF band, are no longer allowed. Previously, it was possible to inadvertently get into this state with a remote-control command.

- TX GAIN SETTINGS: In rare cases, per-band transmit gain calibration data was becoming altered as a side-effect of a band change, swap, etc. This should no longer occur.


-----------------------
FOR SOFTWARE DEVELOPERS
-----------------------

- RU/RD COMMANDS: These encoder up/down simulation commands now work when the RIT/XIT offset knob is assigned to an alternate function.

- ADDED FC COMMAND VARIANT: The existing "FC;" command centers the panadapter. You can now provide an offset of up to +/- 99999 Hz, e.g. "FC-5000;". This might be useful when optimizing the panadapter presentation for a given band segment. NOTE: Nonzero panadapter offsets do not apply to tracking mode.

- KY command no longer inserts spaces unexpectedly (example: KY A;KY A; now sends AA not A A). RELATED NOTE: The KY command has a 60 character limit. Any KYR command used for MSG RPT operation has a 60 character limit for repeat. If your message is longer than 60 characters, then MSG RPT may not behave as expected.

- KYW command now always waits before processing the next command (example: KS10;KYW A;KS20;KYW B;FT1;).

- RX; command can now kill TX during a KYW wait command.

- Added support for MENU toggle,incr,decr commands ( MEnnn./; MEnnn.-; MEnnn.+; ) Toggle command behaves the same as decrement on non-binary menu entries.

- UP/DN command: Encoder simulation/emulation performance improved.

- External command performance improved: May help resolve "lag" that appeared in R34.B1 compared to R33 with external host applications.

- Added RD/RU command alternate set format RD0nnnn; RU0nnnn; for direct Hz adjustment.

- Properly implemented RD/RU commands.

- Finished XVP command implementation.

K4 BETA Software Release Notes

K4 BETA TEST FIRMWARE RELEASE NOTES

No BETA Updates at this time.

See K4 Beta Software Release Notes for revision updates.

To install the beta software, make sure you have an ethernet connection, then:

1. Tap Fn, then hold UPDATE

2. Use the pulldown menu at the top of the screen to select Beta Release (if you didn't have this selected already).

3. Tap Check for Updates. This downloads the new code but does not do the installation. This gives you an opportunity to optionally tap "Release Notes" and read the notes first.

4. When you're ready to do the installation, tap "Install".

NOTE: If the status area shows error messages of any kind, try doing the install a second time. You may have had an older version of the update app itself, in which case a second install should complete the process.

Current K3, K3/0 Mini and K3s Production Firmware  

K3 MCU 5.67 / DSP 2.88 / FPF 1.26, 1-22-2019

All K3s radios ordered today will have Product Firmware loaded as they come out of the box.  Monitor the Elecraft Email Reflector where announcements are made when new releases become available.  

Elecraft delivers new features in firmware.  As a result, you should consider the Release Notes as an extension of the Owners Manual.  Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released.

Current Production Firmware Release Notes

• 6 M GAIN REDUCTION (FOR USE WITH KPA3A): In some cases the KPA3A may have more gain than necessary on 6 meters. As a precaution, all radios using a KPA3A (instead of the older KPA3) should be configured to insert some attenuation. See instructions below. No hardware modifications are required.

• T/R TIMING IMPROVED. Adds more margin during KPA3A TX sequencing.
• See K3 Firmware Release Notes for complete revision history
• Download the latest K3 Firmware.

Important - Please read before installing the latest Production Firmware

If you have firmware older than indicated below, please be sure to follow the steps below.

• MCU 5.10 (or later): Re-run the 50-Watt gain calibration step on all bands one time. Once this has been done, there is no need to do it again when loading releases above 5.10.
• MCU 4.67 (or later): Must be loaded with  K3 Utility, Version 1.13.5.9 or later

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the K3 Utility.  It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the K3 Utility.
• See the Help → Getting Started pull-down menu in the K3 Utility for the steps to install firmware in your K3, K3/0 Mini, K3s.

Beta Firmware Installation and Release Notes

Beta Firmware Release Notes

No Beta Firmware candidate at this time

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this. Beta firmware means that, while the K3, K3/0 Mini, K3s engineering team has fully tested the firmware, it has not yet been deemed ready for Production status. You can always return to the last firmware you have downloaded by following the steps in the K3 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1.  Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2.  Now, we will download the firmware in Zip file format. In a web browser, type in this URL:  https://ftp.elecraft.com/K3/firmware/beta 

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on our browser to update your browser cache.    

3.  Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4.  Unzip the files into the beta folder.

5.  Enter the path to the beta folder in K3 Utility → Firmware tab → "Local folder for firmware files".

6.  After you have made the change in Step 5, make sure you *DO NOT* check the K3 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7.  Connect the K3, K3/0 Mini, K3s to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8.  Review the release notes. To find them, select the "Help" pull-down menu.

9.  Click "Send all firmware to K3." This will cause the firmware to be sent to the K3, K3/0 Mini, K3s. You will see that the K3, K3/0 Mini, K3s appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the K3, K3/0 Mini, K3s OFF and then back ON before using it.

Current K144XV Production Firmware Revision

 Current Production K144XV Firmware Release Notes

• Fixes status LED lighting HF TX.
• See K144XV Firmware Release Notes  for a complete revision history
• Download the latest K144XV Firmware

Please read before installing the latest Production Firmware

Production Firmware Installation Notes

• All Production Firmware is loaded with the K144XV Utility.  It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the K144XV Utility.
• See the Help → Getting Started pull-down menu in the K144XV Utility for the steps to install firmware in your K144XV.

Beta Firmware Installation

No Beta Release available at this time 

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the K144XV engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the K144XV Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility.  In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format.  In a web browser, type in this URL:

https://ftp.elecraft.com/K144XV/firmware/beta

3. Right-click on the .zip file containing the beta firmware (e.g. K144XVfwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in K144XV Utility →  Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the K144XV Utility box titled "Copy new files from Elecraft server".  This will overwrite the Beta firmware if clicked.

7.  Connect the K144XV to your computer and be sure it is turned on.  Select the Firmware tab and Click on "Check versions now" button.  

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to K144XV"  This will cause the firmware to be sent to the K144XV.  You will see that the K144XV may appear to restart itself.  Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the K3/K3S OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

Current Production Firmware :  

 All P3 panadapters ordered today will have Production Firmware loaded as they come out of the box.  Monitor the Elecraft Email Reflector where announcements are made when new releases become available.  

Elecraft delivers new features in firmware.  As a result, you should consider the Release Notes as an extension of the Owners Manual.  Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released.

Current Production P3 Firmware Release Notes

• P3 commands in keyboard macros: Added support to allow P3 commands to be embedded in SVGA keyboard macros. When entering a keyboard macro using a USB keyboard attached to the P3/SVGA, P3 commands can now be intermixed with K3 commands by preceding the with the ‘#’ character. Example: set up a macro to set the K3 to PSK31, frequency 14.070, P3 span of 100 kHz, fixed tune enabled: FA00014070000;MD6;DT3;#SPN001000;#FXT1;
• SVGA keyboard macros as function keys: The first 8 SVGA keyboard macros can now be executed from the 8 front panel function keys. First, using a keyboard, program the macro and make sure to save it into one of the first 8 locations (mem 1 – 8). Then on the P3, press the MENU button and using the encoder, select the SVGA menu and press the encoder to enter. Then using the encoder, choose “Macro 1” through “Macro 8”, then press the function key (short tap or long hold) to map the macro to the function key.
• Enable/disable TX sensing at the TxMon coupler: Added TxSensEn to TxMon sub-menu. This allows enabling/disabling of transmit sensing at the coupler. For K3 and K3S users, TxSensEn can be set to “disabled”, which will use the serial connection from the K3 to determine the TX state. Setting TxSensEn to “enabled” will use forward power sensed at the TxMon coupler to determine TX state (useful for non-Elecraft radios).
• K3S attenuator support: The P3 now properly scales the display when the four-step attenuator in the K3S is enabled.
• SWR meter blanked: Both the analog and digital SWR displays are now blanked whenever the transmit power is too low to give a valid reading.
• New #RCF command: “Relative Center Frequency” applies an offset to the center frequency based on the passed argument. Usage: #RCFsnnnnnn; Where: ‘s’ is the sign + or -, nnnnnn is the offset in Hz. For example, if the P3 is set to a 30 kHz span and you would like to position the cursor on the left edge: #RCF+015000; Using #RCF without any arguments returns the difference in Hz between the center frequency and the vfo frequency.
• Serial #DSM command: The Display Mode (#DSM) command now controls the Transmit Monitor's power/SWR meter display as well as enabling and disabling the waterfall window. #DSM0 = Spectrum display only, #DSM1 = Spectrum + waterfall, #DSM2 = Spectrum + meters, #DSM3 = Spectrum + waterfall + meters.
• New #FON command: The display font can now be selected via a serial command. #FON0 = 5 x 7 pixels, #FON1 = 7 x 11 pixels, #FON2 = 9 x 14 pixels.
• New #XCV command: The transceiver type can now be selected via a serial command. #XCV00 = "K3", #XCV01 = User-defined, #XCV03 = 455 kHz IF, etc. The command uses the same number order as in the "Xcvr Sel" menu item.
• Transceiver definition bug fix - Exiting: When exiting the "Xcvr Def" menu page, if the user-defined transceiver is already selected, it will reflect the new values immediately, rather than having to re-select it.
• Transceiver definition bug fix - IF Invert: The USER transceiver that is defined in the "Xcvr Def" menu item may now specify "Not inverted" IF tuning even if the "K3" control language is selected.
• SVGA resolution / main waterfall bug fix: The main waterfall height had been switching to the default value after changing SVGA resolution.
• VFO B cursor = VFO DATA A bug: The VFO B cursor had been matching the VFO A cursor in DATA A mode, even when VFO B was in a different mode.
• Bitmap Upload bug: Fixes a bug in which the waterfall area was omitted from a bitmap capture when the TXMON meters were visible.
• See P3 Firmware Release Notes for complete revision history
• Download the latest P3 Firmware.

Important - Please read before installing the latest Production Firmware

• This P3 firmware requires K3K3S firmware version 4.25 or later to operate.
• It must be loaded with P3 Utility version 1.15.8.28 or later
• P3 firmware Version 01.60 requires SVGA firmware 01.34 to support all SVGA features.

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the P3 Utility.  It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the P3 Utility.
• See the Help → Getting Started pull-down menu in the P3 Utility for the steps to install firmware in your P3.

P3 Beta Firmware Installation and Release Notes

P3 Beta Firmware Release Notes

None right now!

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the P3 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the P3 Utility’s Help section.

To Load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility.  In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format.  In a web browser, type in this URL:

https://ftp.elecraft.com/P3/firmware/beta/

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in P3 Utility →  Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the P3 Utility box titled "Copy new files from Elecraft server".  This will overwrite the Beta firmware if clicked.

7. Connect the P3 to your computer and be sure it is turned on.  Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to P3."  This will cause the firmware to be sent to the K3S.  You will see that the P3 appears to restart itself.  Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the P3 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

Current KPA500 Production Firmware

Current Production Firmware Release Notes

• Added internal factory settings to optimize production of KPA500 product. No new operator features added to this release.
• Frequency count now requires at least 1/2 watt input power to be valid. This corrects rare issue with unexpected band change in SSB operation. All Faults may now be reset through serial port.
• Corrected issue with periodic switching from STBY to OPER when no band signals are connect, BCD or K3 RADIO mode is set, and PWR ON->OPER is set.
• See KPA500 Firmware Release Notes  for a complete revision history
• Download the latest KPA500 Firmware.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the KPA500 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KPA500 Utility.
• See the Help → Getting Started pull-down menu in the KPA500 Utility for the steps to install firmware in your KPA500.

Beta Firmware Installation and Release Notes

Beta Firmware Release Notes

None right now!

 Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.
A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this. Beta firmware means that, while the KPA500 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status. You can always return to the last firmware you have downloaded by following the steps in the KPA500 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the KPA500 Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:  https://ftp.elecraft.com/KPA/firmware/beta

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. KPA500fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in KPA500 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the KPA500 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the KPA500 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to KPA500." This will cause the firmware to be sent to the KPA500. You will see that the KPA500 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the KPA500 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

Current Production Firmware

MCU 02.05 10-11-2021

All KAT500 tuners ordered today will have Production Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available.

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owners Manual. Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released.

Current Production Firmware Release Notes

• Accept K4 transceiver frequency messages with 1 kHz resolution via AUXBUS
• Accept IF, FA, FB, and FT transceiver TX frequency messages from Elecraft K3S, K3, KX3, Kenwood, Flex, Yaesu FT-450, FTDX3000, FTDX5000, FT-891, FT-991A, FTDX101MP, and FTDX101D. KPA500 and some logging programs poll with these messages.
• Add commands: FC; (TX frequency count), FX; (last XCVR or CAT-supplied frequency), and FY; that shows the frequency span for the currently selected ATU memory. An updated KAT500 Utility Program shows these values on the Operate tab.
• Add FDT; command to specify the distance, in kHz, between the current ATU frequency and a new TX frequency count for the ATU to retune.
• DM; command, without a specified frequency, shows all the stored ATU settings for the currently selected frequency segment (bin)
• Add FTNS; command to perform full search tune, but skip saving the result. ATU settings can then be saved with SM; if desired.
• Commands FCCS, FCMD, MTA, and MTM are removed or have no effect.
• See the updated KAT500 Automatic Antenna Tuner Serial Command Reference for details on new commands FC, FX, FY, FDT, and FTNS.
• Revise frequency counter to better track SSB TX count changes
• Favor frequencies supplied by command or transceiver over the frequency counter
• Align bins to band boundaries. The first 80 meter bin is now 3500-3509 kHz rather than 3481-3500.
  01.79 9-2-2018
• Interrupt amplifier key line when SWR exceeds a configurable threshold in all ATU modes, including Bypass. SWR Threshold for amplifier key interrupt may be configured high (99:1) to disable this protection mechanism. See KAT500 Utility Help: Configuration, Edit Configuration, SWR Thresholds.
• See KAT500 Firmware Release Notes for complete revision history.
• Download the latest KAT500 Firmware.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the KAT500 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KAT500 Utility.
• See the Help → Getting Started pull-down menu in the KAT500 Utility for the steps to install firmware in your KAT500.

Beta Firmware Installation and Release Notes

Beta Firmware Release Notes

KAT500 Beta Firmware Release Notes

 02.13 9-12-2023

 Add "ATU settings per bin" to limit the number of ATU settings that can be stored in any given "bin" (frequency segment) for a particular antenna.

Each "bin" has room for 6 ATU settings, shared by all three antenna connectors.

For example, If you're using all 3 antenna connectors for a particular band, you might limit the maximum number of ATU settings for each antenna to 2. If you're using 2 connectors on another band, you might set ATU settings per bin to 3.

See the updated KAT500 Automatic Antenna Tuner Serial Command Reference AB command for details. An updated KAT500 Utility may be used to configure ATU Settings per bin.

Illuminate BYP LED in modes AUTO and MAN when the current ATU setting is "bypassed".

DM command response trimmed, now shows the number of unused ATU settings on one line. Band, bin, and EEPROM address were removed. BYP relay shown only when bypassed. Added trailing ; CR LF.

In some low forward power high SWR scenarios when only the frequency counter is used to detect band change, the ATU was reluctant to change bands and full search tunes "stuttered".

Full search tune requires more than minimum power to compute an accurate SWR, 20 watts is suggested.

Use last-measured SWR bypass when capacitor or inductor is manually changed.

02.10 6-27-2023

Add semicolon terminator to DM command response.

Reset amp key interrupt when fault is cleared if no longer transmitting.

Don't undo manual AMPI1; setter without power cycle.

02.08 5-11-2022

Accept AKIP and SM commands with leading spaces and don't require leading zeros. 

02.07 1-7-2022

Some low power full search tunes were erroneously replaced with "bypassed".

See KAT500 Software Release Notes for complete revision history.

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com. 

A Little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this. Beta firmware means that, while the KAT500 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status. You can always return to the last firmware you have downloaded by following the steps in the KAT500 Utility’s Help section.

To load Beta Firmware, follow the steps below:
1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL: elecraft.com/KAT500/firmware/beta

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in K3 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the KAT500 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the KAT500 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to KAT500." This will cause the firmware to be sent to the KAT500. You will see that the KAT500 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the KAT500 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

Current KPA1500 Production Firmware

MCU 02.66 1/19/2023

All KPA1500 amplifiers ordered today will have Product Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available. 

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owners Manual. Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released.

Current Production Firmware Release Notes

02.66 1/19/2023

• ATU Settings / Bin applies to each antenna. ATU settings per bin 4 now means up to 4 ATU settings for ANT1 and up to 4 ATU settings for ANT2 may be stored in each bin.
• Bugfix: ATU HiSwr retune was not started in some situations
• Bugfix: ^FC; getter didn't respond

02.62 12/5/2022

• Process additional K4 AUXBUS messages
• Add Fan Control minimum speed commands: ^FC-; decreases min fan speed by 1, ^FC+; increases min fan speed by 1, ^FC/; reverts to prior min fan speed, and can be used as a toggle between two speeds.

02.60 11/13/2022

• Check LPF_VMON more frequently in Mode OPER
• Additional text on AUX INPUT status page to show exceptional status: LPF_VMON, TX INHIBIT, EXT ON, TUNE START
• Use VFWD vs VINP for freq count & SWR power threshold when PA is bypassed

• Reduce ATU TUNE delay when BANDCHANGE->STBY is enabled
• See KPA1500 Firmware Release Notes for complete revision history.
• Download the latest KPA1500 Firmware.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the KPA1500 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KPA1500 Utility.
• See the Help → Getting Started pull-down menu in the KPA1500 Utility for the steps to install firmware in your KPA1500.

Beta Firmware Installation and Release Notes

Beta Firmware Release Notes

BETA 02.67 8/2/2023

02.67 6/27/2023

• Poll serial radios with IF;FT;FA;FB; TS-890S and TS-990S respond differently when in split and TX than other Kenwoods.

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this. Beta firmware means that, while the KPA1500 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status. You can always return to the last firmware you have downloaded by following the steps in the KPA1500 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the KPA1500 Utility. In this way, you can revert to the last Production firmware easily.
2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL: https://ftp.elecraft.com/KPA1500/firmware/beta
If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. KPA1500fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.
4. Unzip the files into the beta folder.
5. Enter the path to the beta folder in KPA1500 Utility → Firmware tab → "Local folder for firmware files".
6. After you have made the change in Step 5, make sure you *DO NOT* check the KPA1500 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.
7. Connect the KPA1500 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.
8. Review the release notes. To find them, select the "Help" pull-down menu.
9. Click "Send all firmware to KPA1500." This will cause the firmware to be sent to the KPA1500. You will see that the KPA1500 appears to restart itself. Monitor the Activity Log until it is complete.
10. After completing a new software download to your product, please power cycle the KPA1500 OFF and then back ON before using it.

Please report any new firmware issues to support@elecraft.com.

Current K3, K3/0 Mini and K3s Production Firmware  

All versions of the K3 Transceivers use the same Production Firmware and Utility for the Operating System. Visit here to access your Firmware and Utility.

Current Production Firmware
MCU 1.12

All K-Pod radios ordered today will have Product Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available.

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owners Manual. Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released.

Current Production Firmware Release Notes

• 1.12 10/20/2021
  Holding down F4 on power up selects encoder 1:1 rate.
  Holding down F5 on power up selects 1:0.5 rate.
  Encoder rates can now be configured via USB (for K4 use).
• 1.11 06/29/2020
  Adds hold of F4 key on power-up selects 800 counts per revolution.
• See K-Pod Firmware Release Notes for complete revision history
• Download the latest K-Pod Firmware.

Important - Please read before installing the latest Production Firmware

If you have firmware older than indicated below, please be sure to follow the steps below.

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the K-Pod Utility. It will take care of the download and installing Production Firmware
• All steps to load Production Firmware is found in the latest version of the K-POD Owners Manual found on our web site.
• Before loading Production Firmware, please ensure you have installed the latest version of the K-Pod Utility

Beta Firmware Installation and Release Notes

Beta Firmware Release Notes

 --Not available at this time--

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this. Beta firmware means that, while the K-Pod engineering team has fully tested the firmware, it has not yet been deemed ready for Production status. You can always return to the last firmware you have downloaded by following the steps in the K-Pod Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

https://ftp.elecraft.com/K-Pod/firmware/beta

If you do not see the correct version of the zip file, press the RELOAD / REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in K-Pod Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the K-Pod Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the K-Pod to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to K-Pod." This will cause the firmware to be sent to the K-Pod. You will see that the K-Pod appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the K-Pod OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

 KX3 Current Production Firmware

MCU 3.02 / DSP 1.52, 4-8-2022

All KX3’s ordered today will have Production Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available.

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owner's Manual. Documentation for the new features will be found there and will not appear in the Owner's Manual until the next major manual revision is released.

Current Production KX3 Firmware Release Notes

MCU 3.02 / DSP 1.52, 2-21-2022

• FIXED TX INHIBIT PROBLEM WITH ACC IO OUTPUT:  Previously, when ACC IO was used as a TX inhibit output, keying in CW mode could lead to a “stuck” sidetone. This has been corrected for both the LO=INH and HI=INH settings of the ACC IO menu entry.
• MORE OPERATIMG TIME AT 10 W IN CW MODE:  In CW mode, the KX3 now provides up to 10 W output as long as the supply is above 9.0 V (on key-down). In other modes the criteria for 10 W output is still 10.0 V. This is required to preserve low transmit IMD. 

MCU 2.98 / DSP 1.52, 4-28-2019

• ATU TUNING IMPROVED WITH LOW SUPPLY/BATTERY VOLTAGE:  ATU tuning should now be reliable down to as low as 8.5 V. Also increased relay settling time.
• See KX3 Firmware Release Notes  for a complete revision history
• Download the latest KX3 Firmware.

These are the most Release Notes since the last Production firmware release. Please see your KX3 Utility → Help → Release Notes for all Release Notes listed in order of release.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility Help Facility

• All Production Firmware is loaded with the KX3 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KX3 Utility.
• See the Help → Getting Started pull-down menu in the KX3 Utility for the steps to install firmware in your radio.

KX3 Beta Test Firmware Installation and Release Notes

KX3 Beta Test Firmware Release Notes

No Update At This Time

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the KX3 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the KX3 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

https://ftp.elecraft.com/kx3/firmware/beta/

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button onyour browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in KX3 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the KX3 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the KX3 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to KX3." This will cause the firmware to be sent to the KX3. You will see that the KX3 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the KX3 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

Important - Please read before installing the latest Production Firmware

MCU 3.02 / DSP 1.52, 4-8-2022

All KX2’s ordered today will have Production Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available.

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owners Manual. Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released.

Current Production KX2 Firmware Release Notes

MCU 3.02 / DSP 1.52, 3-18-2022

• MORE OPERATIMG TIME AT 10 W IN CW MODE:  In CW mode, we now allow up to 10 W output as long as the supply is above 9 V (key-down). In other modes the criteria for 10 W output is still 10 V. This is required to preserve low transmit IMD.

MCU 3.01 / DSP 1.52, 11-20-2021

• KXIBC2 INTERNAL BATTERY CHARGER SUPPORT:  If a KXIBC2 is installed, set MENU: KXIBC2 to NOR. This will allow the operator to optional monitor battery voltage by tapping DISP and selecting the “BT XX.X” display (by rotating the VFO B/OFS knob). Internal battery charging is automated and can be done with or without the radio turned on. When charging is in progress, the KXIBC2’s yellow LED is illuminated. For further details, refer to the KXIBC2 manual.

• See KX2 Firmware Release Notes for complete revision history
• Download the latest KX2 Firmware.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility Help Facility

• All Production Firmware is loaded with the KX2 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KX2 Utility.
• See the Help → Getting Started pull-down menu in the KX2 Utility for the steps to install firmware in your radio.

KX2 Beta Firmware Installation and Release Notes

KX2 Beta Test Firmware Release Notes

No Update At This Time

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the KX2 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the KX2 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

https://ftp.elecraft.com/KX2/firmware/beta/

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on our browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in KX2 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the KX2 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the KX2 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to KX2." This will cause the firmware to be sent to the KX2. You will see that the KX2 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the KX2 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

 KXPA100 Current Production Firmware

MCU 1.39, 12-8-2016

All KXPA100’s ordered today will have Production Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available.

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owner's Manual. Documentation for the new features will be found there and will not appear in the Owner's Manual until the next major manual revision is released.

Current Production KXPA100 Firmware Release Notes

• Widen timing window to more reliably detect push button switch presses.
• Enable PX3 image capture through KXPA100.
• Requires updated PX3 Utility and PX3 firmware.
• Change PC side RS-232 to 1 stop bit when transferring image.
• Add manual switch to disable amplifier with ATU available:
• MODE button HOLD now toggles power amplifier bypass.
• Power ON LED blinks slowly when PA is bypassed.
• See KXPA100 Firmware Release Notes for complete revision history.
• Download the latest KXPA100 Firmware

These are the most Release Notes since the last Production firmware release. Please see your KXPA100 Utility → Help → Release Notes for all Release Notes listed in order of release.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility Help Facility

• All Production Firmware is loaded with the KXPA100 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KXPA100 Utility.
• See the Help → Getting Started pull-down menu in the KXPA100 Utility for the steps to install firmware in your radio.

KXPA100 Beta Firmware Installation and Release Notes

KXPA100 Beta Firmware Release Notes

None Right Now!

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the KXPA100 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the KXPA100 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

https://ftp.elecraft.com/KXPA/firmware/beta/

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on our browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in KXPA100 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the KXPA100 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the KXPA100 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button. 

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to KXPA100." This will cause the firmware to be sent to the KXPA100. You will see that the KXPA100 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the KXPA100 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

PX3 Current Production Firmware

MCU 1.48, 2-8-2017

All PX3’s ordered today will have Production Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available. 

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owner's Manual. Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released. 

Current Production PX3 Firmware Release Notes

Please use the latest version of the PX3 Utility.
Rev. 1.16 or later of the PX3 requires KX3 firmware version 2.27 or later 

• Note: refer to the latest PX3 manual for more information regarding these new features.
• Adds: USB MSD (mass storage device, memory stick, thumb drive) support. Most types of flash drives are supported. Added a new sub-menu called “MSD menu” which includes the following features.
• Adds: Serial commands #MAA, #MBA to adjust A or B markers by an incrementing or decrementing. The adjustment value is the same as used by the K3/KX3 UP and DN commands.
• Adds: Frequency displays now show all digits including the Hz digit. This includes the center frequency adjustment and marker values. Note that markers adjust by values determined by the current span setting.
• Adds: To enter the text decode scratchpad, you can now use either Insert or Alt-P. To send the scratchpad, you can now use either Ctrl-Insert or Ctrl-P .
• Adds: #MSS msd screen shot serial command
• See PX3 Firmware Release Notes for complete revision history
• Download the latest PX3 Firmware

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility Help Facility

• All Production Firmware is loaded with the PX3 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the PX3 Utility.
• See the Help → Getting Started pull-down menu in the PX3 Utility for the steps to install firmware in your radio.

PX3 Beta Firmware Installation and Release Notes

PX3 Beta Firmware Release Notes

None Right Now!

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the PX3 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the PX3 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

https://ftp.elecraft.com/PX3/firmware/beta/

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on our browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in PX3 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the PX3 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the PX3 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button. 

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to PX3." This will cause the firmware to be sent to the PX3. You will see that the PX3 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the PX3 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

Current KPA1500 Production Firmware

MCU 02.66 1/19/2023

All KPA1500 amplifiers ordered today will have Product Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available. 

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owners Manual. Documentation for the new features will be found there and will not appear in the Owner’s Manual until the next major manual revision is released.

Current Production Firmware Release Notes

02.66 1/19/2023

• ATU Settings / Bin applies to each antenna. ATU settings per bin 4 now means up to 4 ATU settings for ANT1 and up to 4 ATU settings for ANT2 may be stored in each bin.
• Bugfix: ATU HiSwr retune was not started in some situations
• Bugfix: ^FC; getter didn't respond

02.62 12/5/2022

• Process additional K4 AUXBUS messages
• Add Fan Control minimum speed commands: ^FC-; decreases min fan speed by 1, ^FC+; increases min fan speed by 1, ^FC/; reverts to prior min fan speed, and can be used as a toggle between two speeds.

02.60 11/13/2022

• Check LPF_VMON more frequently in Mode OPER
• Additional text on AUX INPUT status page to show exceptional status: LPF_VMON, TX INHIBIT, EXT ON, TUNE START
• Use VFWD vs VINP for freq count & SWR power threshold when PA is bypassed

• Reduce ATU TUNE delay when BANDCHANGE->STBY is enabled
• See KPA1500 Firmware Release Notes for complete revision history.
• Download the latest KPA1500 Firmware.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the KPA1500 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KPA1500 Utility.
• See the Help → Getting Started pull-down menu in the KPA1500 Utility for the steps to install firmware in your KPA1500.

Beta Firmware Installation and Release Notes

Beta Firmware Release Notes

BETA 02.67 8/2/2023

02.67 6/27/2023

• Poll serial radios with IF;FT;FA;FB; TS-890S and TS-990S respond differently when in split and TX than other Kenwoods.

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this. Beta firmware means that, while the KPA1500 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status. You can always return to the last firmware you have downloaded by following the steps in the KPA1500 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the KPA1500 Utility. In this way, you can revert to the last Production firmware easily.
2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL: https://ftp.elecraft.com/KPA1500/firmware/beta
If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. KPA1500fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.
4. Unzip the files into the beta folder.
5. Enter the path to the beta folder in KPA1500 Utility → Firmware tab → "Local folder for firmware files".
6. After you have made the change in Step 5, make sure you *DO NOT* check the KPA1500 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.
7. Connect the KPA1500 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.
8. Review the release notes. To find them, select the "Help" pull-down menu.
9. Click "Send all firmware to KPA1500." This will cause the firmware to be sent to the KPA1500. You will see that the KPA1500 appears to restart itself. Monitor the Activity Log until it is complete.
10. After completing a new software download to your product, please power cycle the KPA1500 OFF and then back ON before using it.

Please report any new firmware issues to support@elecraft.com.

Current KPA500 Production Firmware

Current Production Firmware Release Notes

• Added internal factory settings to optimize production of KPA500 product. No new operator features added to this release.
• Frequency count now requires at least 1/2 watt input power to be valid. This corrects rare issue with unexpected band change in SSB operation. All Faults may now be reset through serial port.
• Corrected issue with periodic switching from STBY to OPER when no band signals are connect, BCD or K3 RADIO mode is set, and PWR ON->OPER is set.
• See KPA500 Firmware Release Notes  for a complete revision history
• Download the latest KPA500 Firmware.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the KPA500 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KPA500 Utility.
• See the Help → Getting Started pull-down menu in the KPA500 Utility for the steps to install firmware in your KPA500.

Beta Firmware Installation and Release Notes

Beta Firmware Release Notes

None right now!

 Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.
A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this. Beta firmware means that, while the KPA500 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status. You can always return to the last firmware you have downloaded by following the steps in the KPA500 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the KPA500 Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:  https://ftp.elecraft.com/KPA/firmware/beta

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. KPA500fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in KPA500 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the KPA500 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the KPA500 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to KPA500." This will cause the firmware to be sent to the KPA500. You will see that the KPA500 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the KPA500 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

 KXPA100 Current Production Firmware

MCU 1.39, 12-8-2016

All KXPA100’s ordered today will have Production Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available.

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owner's Manual. Documentation for the new features will be found there and will not appear in the Owner's Manual until the next major manual revision is released.

Current Production KXPA100 Firmware Release Notes

• Widen timing window to more reliably detect push button switch presses.
• Enable PX3 image capture through KXPA100.
• Requires updated PX3 Utility and PX3 firmware.
• Change PC side RS-232 to 1 stop bit when transferring image.
• Add manual switch to disable amplifier with ATU available:
• MODE button HOLD now toggles power amplifier bypass.
• Power ON LED blinks slowly when PA is bypassed.
• See KXPA100 Firmware Release Notes for complete revision history.
• Download the latest KXPA100 Firmware

These are the most Release Notes since the last Production firmware release. Please see your KXPA100 Utility → Help → Release Notes for all Release Notes listed in order of release.

Important - Please read before installing the latest Production Firmware

Production Firmware Installation Instructions are found in the Utility Help Facility

• All Production Firmware is loaded with the KXPA100 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the KXPA100 Utility.
• See the Help → Getting Started pull-down menu in the KXPA100 Utility for the steps to install firmware in your radio.

KXPA100 Beta Firmware Installation and Release Notes

KXPA100 Beta Firmware Release Notes

None Right Now!

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the KXPA100 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the KXPA100 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

https://ftp.elecraft.com/KXPA/firmware/beta/

If you do not see the correct version of the zip file, press the RELOAD/REFRESH button on our browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in KXPA100 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the KXPA100 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the KXPA100 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button. 

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to KXPA100." This will cause the firmware to be sent to the KXPA100. You will see that the KXPA100 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the KXPA100 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

 KRC2 FIRMWARE AND PROGRAM DOWNLOADS

 KRC2 CONFIGURATION PROGRAMMER SOFTWARE

The software provided for download on this section is provided as a free service to our customers and is provided as-is without warranty. 

Current Production Firmware:

REV 1.19, 2-6-2017

All XG3 signal source ordered today will have Product Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available.

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owner's Manual. Documentation for the new features will be found there and will not appear in the Owner's Manual until the next major manual revision is released.

Current Production Firmware Release Notes

• The serial command ‘W’ can now interpret the same meta-characters that the Morse memory (WM) command utilizes.  This allows the XG3 Utility’s Command Tester to invoke a variety of complex macros using the programmable buttons in the Utility.  Macros executed via the ‘W’ command can contain up to 93 characters.
• See XG3 Signal Source Firmware Release Notes for complete revision history
• Download the latest XG3 Signal Source Firmware

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the XG3 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the XG3 Utility.
• See the Help → Getting Started pull-down menu in the K3 Utility for the steps to install firmware in your XG3.

Beta Firmware Installation and Release Notes

 Beta Firmware Release Notes

None Right Now!

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the XG3 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the XG3 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

 https://ftp.elecraft.com/XG3/firmware/beta

 If you do not see the correct version of the zip file, press the RELOAD / REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware (e.g. k3fwXrYZ.zip for revision MCU X.YZ and all associated files). Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in XG3 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the XG3 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the XG3 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button.

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to XG3." This will cause the firmware to be sent to the XG3. You will see that the XG3 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the XG3 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

W2 Current Production Firmware:

V1.00, 4-12-2010

All W2 SWR/Power meters ordered today will have Product Firmware loaded as they come out of the box. Monitor the Elecraft Email Reflector where announcements are made when new releases become available. 

Elecraft delivers new features in firmware. As a result, you should consider the Release Notes as an extension of the Owner's Manual. Documentation for the new features will be found there and will not appear in the Owner's Manual until the next major manual revision is released.

Current Production Firmware Release Notes

• SWR ACCURACY: As a result of our continuing product improvement, a different algorithm is now used to calculate the SWR value. Besides offering greater accuracy at lower power levels, the SWR data available from the Serial Port now reports the range of 1.00:1 to 99.99:1, giving much finer resolution of SWR readings.
• SWR ALARM CHANGES: The trip points for the SWR Alarm now match the SWR LED’s on the front panel of the W2. The range is still 1.1:1 to 5.0:1. Sending the W2 a “[” lowers the trip point, and “]” raises the trip point. Note the decimal point is implied in the serial response, i.e. “[25;” means the trip point was lowered to an SWR of 2.5:1 and “]40” means the trip point was raised to 4.0:1.
• SWR ALARM RESPONSE TIME: You can use the “PTT RY” RCA connectors on the back of the W2 to help protect your amp in case of high SWR. The response time that it takes for the relay to trip has been improved and can now catch an “I” sent at 60 WPM.
• SERIAL COMMAND CHANGES: The Serial Command set has had some minor changes in output format. 
• See W2 Firmware Release Notes for complete revision history
• Download the latest W2 Firmware.

Important - Please read before installing the latest Production Firmware

If you have firmware older than indicated below, please be sure to follow the steps below.

***No special instructions at this time***

Production Firmware Installation Instructions are found in the Utility

• All Production Firmware is loaded with the W2 Utility. It will take care of the download and installing Production Firmware
• Before loading Production Firmware, please ensure you have installed the latest version of the W2 Utility.
• See the Help → Getting Started pull-down menu in the W2 Utility for the steps to install firmware in your W2.

Beta Firmware Installation and Release Notes

No Beta Firmware candidate at this time

 Beta Firmware Release Notes

Beta Test Firmware Installation Procedures

NOTE: Beta test firmware may have new issues that we haven't caught during field testing. Please report them to support@elecraft.com.

A little more detail

We make it a little harder to load Beta firmware mainly because we want you to be sure you want to do this.  Beta firmware means that, while the W2 engineering team has fully tested the firmware, it has not yet been deemed ready for Production status.   You can always return to the last firmware you have downloaded by following the steps in the W2 Utility’s Help section.

To load Beta Firmware, follow the steps below:

1. Create a new folder for the beta firmware on your Desktop or some other easily found location. Use the a different folder than the default folder found in the Firmware tab of the Utility. In this way, you can revert to the last Production firmware easily.

2. Now, we will download the firmware in Zip file format. In a web browser, type in this URL:

 https://ftp.elecraft.com/W2/firmware/beta

If you do not see the correct version of the zip file, press the RELOAD / REFRESH button on your browser to update your browser cache.

3. Right-click on the .zip file containing the beta firmware.  Save the file to your beta folder you just created.

4. Unzip the files into the beta folder.

5. Enter the path to the beta folder in W2 Utility → Firmware tab → "Local folder for firmware files".

6. After you have made the change in Step 5, make sure you *DO NOT* check the W2 Utility box titled "Copy new files from Elecraft server". This will overwrite the Beta firmware if clicked.

7. Connect the W2 to your computer and be sure it is turned on. Select the Firmware tab and Click on "Check versions now" button. 

8. Review the release notes. To find them, select the "Help" pull-down menu.

9. Click "Send all firmware to W2." This will cause the firmware to be sent to the W2. You will see that the W2 appears to restart itself. Monitor the Activity Log until it is complete.

10. After completing a new software download to your product, please power cycle the W2 OFF and then back ON before using it.

11. Please report any new firmware issues to support@elecraft.com

The software provided for download on this page is provided as a free service to our customers and is provided as-is without warranty.

W1 Software Install Package for Windows V1.10 (.zip)

W1 Visual Basic 6 Source Code (.zip)

W1 Serial Interface Command Set (.pdf)

Current K3, K3/0 Mini and K3s Production Firmware  

All versions of the K3 Transceivers use the same Production Firmware and Utility for the Operating System. Visit here to access your Firmware and Utility.