Celebrate National Hobby Month - Check out our Specials!

  • K2 Transceiver Kit
  • Overview
  • K2 Packages
  • Specs
  • Options/Accessories
  • Reviews
  • Manuals
  • Price List/Order


Performance: We've designed big rig features and performance into the K2. Eric and Wayne are experienced CW operators, so solid CW performance (in addition to SSB) is a priority with the K2. Excellent sensitivity and dynamic range, Full QSK Break-in (diode switched), adjustable RX/TX CW pitch, High Speed Memory Keyer, Selectable RX Sideband, and Sharp IF Crystal Filtering are standard. Check out our K2 Performance Number Comparisons with other radios for more details.

Low Power Consumption

The K2 is designed for use both at home and in the field. The K2’s low receive current (approx. 150 mA in battery save mode) makes portable operation possible from small gel cell batteries. The K2 even includes an option for an internal 2.9-Ah rechargeable battery.

Build the K2 for QRP or 100W Operation
The K2 offers efficient QRP CW operation with up to 15 watts output. Build it as a K2/100 by including the internal KPA100 option to get a full featured 100W radio. The KPA100 kit of internal parts, including its micro-controller and heatsink fit totally inside the K2. The KPA100 includes an internal speaker and a RS-232 Aux I/O computer control rig  interface (equivalent to the KIO2), SWR / Power metering and microprocessor controlled silent PIN diode switched T/R.

We also offer SSB, 160 M, a High Performance Noise Blanker, RS-232 computer control, Auto-Tuner (ATU), Internal Battery and Audio Filter options. 

Easy Alignment: No sophisticated test equipment beyond a digital multi-meter is required to align the K2. Our built-in microprocessor and A/D circuitry monitor all important signals and provide user feedback during calibration. They even include a built in general purpose frequency counter, volt meter and radio current drain meter. Our thousands of K2 owners will attest to their success building the K2!

Customizable: We've designed the K2 for easy user modification. All interfaces and signals are fully described in the manual.

Information on K60XV Upgrade



K2 Packages


K2 PAK 1 K2 PAK 2 K2 PAK 3
K2 HF Transceiver K2 HF Transceiver K2 HF Transceiver
KNB2 Noise Blanker KSB2 SSB Option KSB2 SSB Option
Elecraft Logo Hat KNB2 Noise Blanker KNB2 Noise Blanker
$35 Savings! MH4 Hand Microphone KAT2 20W Internal ATU
Elecraft Logo Hat MH4 Hand Microphone
$50 Savings! Elecraft Logo Hat
$75 Savings!







  • Rugged, attractive custom enclosure
  • Small, portable size: 2.9h x 7.8w x 8.2d inches
  • Weight 3.3 lbs. (excluding internal options)
  • 80-10 meter ham band+ coverage; 160 m optional
  • Efficient 12 Volt (10 - 15 V) operation for home or field
  • Receive current as low as 150 mA (battery save mode)
  • CW-only or SSB/CW + Digital Modes with SSB option
  • Back-lit LCD and LED bargraph; day/night settings
  • PLL synthesized--low phase noise
  • Microprocessor controlled
  • 3 transverter bands; programmable display, I.F., power 
  • Dual VFOs with split operation
  • Direct keypad entry of frequencies and memory channels
  • RIT and XIT with four offset ranges 
  • Built-in high-efficiency speaker 
  • Memories store mode, VFO A/B, split, RX filter, etc. 
  • Simple menu system for advanced settings. (Up to two menu functions can be assigned to the two programmable front panel function keys.) 
  • Room for additional connectors on the rear panel 
  • Smart ‘hunt and pounce’ band-scanning mode


  • Low-noise, single-conversion superhet receiver
  • Double-balanced diode mixer for excellent dynamic range
  • Receive sensitivity: 0.15 uV (pre-amp on, typical.)
  • Narrow ham-band, double-tuned bandpass
  • RX/TX filters, relay switched for better IMD response
  • Smooth, fast attack, I.F.-derived AGC (no "popping") 
  • Switchable preamp and attenuator
  • Variable-bandwidth I.F. crystal filtering
  • Multiple VFO tuning rate selections
  • 10 Hz tuning resolution
  • Bar graph S/RF OUT/ALC meter
  • Adjustable squelch 


  • Adjustable 0.1-15 W (K2), 0.1 – 100W (K2/100)
  • Rugged, SWR-protected, push-pull PA transistors
  • Programmable current limit for battery operation
  • Harmonics and spurious outputs: Better than –40 dBc 


  • Full diode switched break-in with variable QSK delay (Both at QRP and 100W levels)
  • 9-memory keyer; iambic A and B; adjustable weight
  • 9-50 wpm (internal keyer); 70+ wpm (external keying)
  • Programmable message repeat interval
  • Simultaneous computer and paddle CW keying inputs
  • Variable bandwidth crystal filter (approx. 200 - 2000 Hz)
  • Adjustable RX CW offset with tracking TX side tone.
  • Selectable opposite sideband RX for QRM reduction 





    QST Magazine "The K2’s receiver performance compares very favorably to that of the samples of the high-end radios we’ve recently examined... The fact that a radio in this price class—and a home-built one at that—can stand proudly in such company is a remarkable accomplishment."  March 2002 QST 



      K2 Packages Quantity Price
      K2PK1 K2 PAK 1 $837.90 $862.90
      K2PK2 K2 PAK 2 $1,062.80 $1,097.80
      K2PK3 K2 PAK 3 $1,252.75 $1,292.75

      K2 HF Transceiver Quantity Price
      K2 Transceiver Kit K2 Transceiver Kit $779.95 $799.95

      K2 Options Quantity Price
      KPA100 Amplifier (Kit) KPA100 Amplifier (Kit) $579.95 $599.95
      KAT2 KAT2 20W Internal ATU $219.95
      KAF2 K2 Audio Filter & Real Time Clock $105.95
      KBT2 KBT2 Internal Battery Kit $99.95
      KBT2-X KBT2 w/o Battery $59.95
      KIO2 KIO2 RS-232 Serial Interface $99.95
      KSB2 SSB Option for K2 $179.95
      KNB2 K2 Noise Blanker Option $79.95
      K160RX K160RX 160M Option $79.95
      K60XV K60XV - 60M and Transverter Interface - Older K2s, KAT2s, KAT100s, KSB2s may need f/w upgrades. $105.95
      KAT100-1 100W Ext. ATU $325.95

      K2 Accessories Quantity Price
      PROSET-K2 Proset-K2 Boom Headset $165.00
      MH4 MH4 Hand Held Microphone (K3S/K3/K2) $69.95
      SS30DV SS30DV Compact Switching Power Supply $119.95
      KUSB KUSB Serial Adapter Cable $42.95
      KPCA-F KPCA-F Power Cable $29.95
      ETS15 ETS15 1.5" Tilt Stand for KAT100 $29.95
      ETS2 ETS2 Std 3" Tilt Stand for KAT100 $29.95

      K2 Manuals Quantity Price
      E740001 K2 Manual $29.00

      K2 Upgrades Quantity Price
      FW K2MCUIO K2 MCU F/W Upgrade to 2.04; K2 IOC Upgrade to 2.04 $74.95
      FW KAT2 KAT2 F/W Upgrade to 1.07 $39.95
      FW KSB2 KSB2 F/W Upgrade to 1.08 $39.00
      FWKAT100 KAT100 F/W Upgrade to 1.05 $39.95
      FWKDSP2 KDSP2 Firmware Upgrade to Rev. 3.1 $29.00
      FWKPA100 KPA100 Firmware Upgrade to 1.10 $39.95

      K2 Revision A to B Upgrade Quantity Price
      BFOMDKT K2 BFO Toroid & PLL Ref Osc Xtal Upgrade $10.95
      E850089 Grill Cloth $2.95
      E850093 10M BPF, VFO/ALC Mod Kit $15.95
      E850138 K2 Temperature Compensated PLL Reference Upgrade $24.95
      FW K2MCUIO K2 MCU F/W Upgrade to 2.04; K2 IOC Upgrade to 2.04 $74.95
      K2ATOBKT K2 Rev A to B Upgrade Parts $29.95
      XFIL MOD KIT 2nd Filter Upgrade for the K2 $10.00

      K2 Rev B Component Upgrade Kit Quantity Price
      FW K2MCUIO K2 MCU F/W Upgrade to 2.04; K2 IOC Upgrade to 2.04 $74.95
      E740001 K2 Manual $29.00
      K2BCOMPKT K2 Rev B Component Upgrade Kit $59.95
      E850138 K2 Temperature Compensated PLL Reference Upgrade $24.95

      Elecraft Wear Quantity Price
      KHAT Elecraft Logo Hat $18.00
      T-Shirt Elecraft Logo T-Shirt /S--Light Gray $18.00
      T-Shirt Elecraft Logo T-Shirt M--Light Gray $18.00
      T-Shirt Elecraft Logo T-Shirt L--Light Gray $18.00
      T-Shirt Elecraft Logo T-Shirt XL--Light Gray $18.00
      T-Shirt Elecraft Logo T-Shirt XXL--Light Gray $18.00
      T-Shirt Elecraft Logo T-Shirt XXXL--Light Gray $18.00
      MWT-Shirt Make Waves T-Shirt SLight Gray $18.00
      MWT-Shirt Make Waves T-Shirt MLight Gray $18.00
      MWT-Shirt Make Waves T-Shirt LLight Gray $18.00
      MWT-Shirt Make Waves T-Shirt XLLight Gray $18.00
      MWT-Shirt Make Waves T-Shirt XXLLight Gray $18.00
      MWT-Shirt Make Waves T-Shirt XXXLLight Gray $18.00

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