KX2 TRANSCEIVER -- (KXBT2 BATTERY SOLD SEPARATELY)

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An 80-10 m SSB/CW/Data station that fits in your pocket!

Note: Paddle in picture is not included.  May be purchased under Options/Accessories.



 NEW! KXIBC2 Internal Battery Charger for the KX2


The KXIBC2 module is a C/10-rate charger for the KXBT2 Li-ion internal battery pack. Operation is simple, requiring only that a power supply be connected to the KX2 when charging is required. The radio may be on or off during charging. The KXIBC2 does not generate any RFI, so the radio may be used during charging if the power supply provides sufficient current for both charging and receive/transmit operation.

The KXIBC2 replaces the previous KXI02 option module, retaining its RTC (real-time-clock) function. Learn more below, under Options/Accessories.

 

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  • Overview
  • KX2 Pack
  • Specs
  • Options/Accessories
  • Reviews & Articles
  • FAQ
  • Manuals
  • Price List/Order


Overview

Our KX2 “stealth” transceiver can go wherever your imagination takes you. Thanks to state-of-the-art construction techniques, it’s only 5.8 x 2.8 x 1.5” and weighs just 13 ounces—making it the smallest full-featured HF radio on the planet. Yet it puts out up to 10 watts, covers 9 bands, and shares many features with the KX3. It also works with the KXPA100 amplifier. To maximize your freedom to roam, you can outfit your KX2 with an internal 2.6 amp-hour Li-ion battery. Current drain is as little as 135 mA, yielding up to 8 hours of typical operation on a single battery charge. There’s also an internal automatic antenna tuner module option (KXAT2), which can tune a random wire, dipole, or whip on multiple bands. A rear tilt-foot angles the KX2 for use on any surface, from desktop to park bench to rock. The KX2 also makes a great moble rig, and can even be used hand-held. It includes a built-in mic for HT-style operation. The KX2’s powerful 32-bit DSP offers features dual watch, stereo audio, user-programmable filter bandwidths, noise blanking, noise reduction, and auto-notch. RTTY and PSK data modes are built in—no PC needed—as well as a memory keyer and digital voice recorder for transmit. There are two padded carrying cases for the KX2, including the CS40 and larger ES60. Both include belt straps and an interior compartment.


KX2 vs KX3: Which one should I buy?   Learn More



Specs

Only 13 oz. (0.3 kg) – ideal for portable and hand-held operation 
• Internal 2.6 Ah, 11 V Li-ion battery option 
• Internal wide-range ATU option 
• Current drain as low as 135 mA 
• Built-in microphone and speaker 
• Advanced DSP provides dual watch, noise reduction, noise blanking, autonotch, stereo audio 
• Versatile software-defined radio (SDR) architecture 
• Operates in data modes (PSK31/RTTY) with or without a PC


Standard Features
  • 80-10 meter ham bands; general coverage receive from 3-32.0MHz (also covers 0.5 to 3 MHz with reduced sensitivity)
  • All modes: SSB, CW, and Data (four sub-modes)
  • Ultra-compact size: 2.8”H x 5.8”W x 1.5”D; 13 oz (less options); low-profile knobs and feet for minimum height
  • Rear tilt foot provides 3-point mount for rugged terrain
  • Custom high-contrast LCD with alphanumeric text display
  • Current drain as low as 135 mA in receive mode
  • High-performance 32-bit floating-point DSP
  • Built-in PSK/TTY decode/encode allows data mode operation without a PC; transmit in data modes using CW keyer paddle
  • Synthesizer has 1-Hz tuning resolution
  • Integrated numeric keypad for direct frequency entry

RECEIVER

  • Software-defined-radio (SDR) architecture for versatility
  • Switchable preamp and attenuator
  • 8-band RX EQ
  • Simultaneous dual receive over up to +/- 23 kHz for split-DX operation
  • Built-in speaker; stereo jack for headphones or powered speakers
  • Easy-to-use Passband Tuning (PBT) for shift/width/hicut/locut; roofing filters automatically track DSP filter settings
  • Auto-notch removes interfering carriers; adjustable noise reduction and noise blanking; stereo audio effect
  • Center-tuning indicator for CW and data modes; auto-spot

TRANSMITTER

  • Up to 10 W on 80-15 m, 8 W on 12 and 10 m (typ.)
  • 100 W with KXPA100 amplifier
  • Rugged, SWR- and temperature-protected final amplifier stage
  • Use with built-in mic or MH3 (with UP/DN VFO functions)
  • CW keyer with 8-50 WPM range; fast, full-break-in keying
  • Built-in digital voice recorder (DVR) with 2 message memories
  • Three CW/DATA message memories
  • Fast, silent, PIN-diode T-R switching – no noisy relays
  • DSP speech processing for excellent “punch”
  • 8-band TX EQ tailors passband to your voice and microphone

Additional Features

  • General-purpose and per-band memories store VFOs, modes, etc.
  • Computer control via supplied USB or RS232 cable
  • Free firmware updates via provided application software
  • Programmable switch (PFn) for access to an often-used menu entry
  • Full remote-control command set works with popular computer software applications
  • Selectable switch-press tones or full Morse code-based interface
  • Tutorial-style manual ideal for new hams



Options


New shipping regulations for Lithium Ion Batteries

Until further notice, we are currently restricted to shipping up to 3 KXBT2 batteries in a single shipment, with one of the three batteries inside a KX2 - this is for both US and international shipments.

We cannot ship Lithium Ion Batteries to the following countries: Australia, Japan, Spain and Thailand.

Battery orders alone can only be shipped UPS Ground - US only.
We apologize for the inconvenience.


Accessories


Books

 


FAQ

Q: What is the KX2?

A: The KX2 is a pocket-sized, all-HF-band, SSB/CW/data transceiver intended for field, mobile, and even hand-held operation. It's the world's smallest full-featured amateur radio transceiver, complete with 10 watts output, a large, easy-to-read display, and built-in battery and antenna tuner options. The KX2 is also a true SDR (software-defined radio), with full 32-bit IF DSP. This unique combination of small size and versatility make the KX2 a great grab-and-go radio for any outing.

Q: Why is the KX2 only offered factory assembled?

A: The KX2 is the smallest full-featured, all-HF-band transceiver available. To achieve this level of miniaturization, we used a variety of high-density, state-of-the art packaging techniques. As a result, some of the hardware and connectors are small enough to be difficult for some potential kit builders to handle.

Q: How does the KX2 differ from the KX3?

A: The KX2 has many of the same features as the KX3, but it's about half the size and weight, making it ideal for ultra-light portable and "stealth" operation. It covers all HF bands (80-10m), with SSB, CW, and data modes, with up to 10 W output from its internal Li-ion battery. Controls are lower in profile. There's a single tilt-foot in the rear, making a 3-point mount for rugged terrain. The built-in mic and quick-disconnect trailing ground wire are ideal for hand-held operation.

The KX3 has additional features that make it the choice of many operators as a home, travel, and DXpedition station. These include 160-6 meter coverage, a 2 or 4-meter VHF option, full 15 watt output on most bands, ultra low-noise synthesizer, larger complement of controls, weighted VFO A tuning knob, and matching high-performance panadapter (PX3).

Both rigs work seamlessly with the KXPA100 amplifier. They also share the MH3 microphone, KXPD2/KXPD3 keyer paddles, and other accessories.

Q: How does the KX2 differ from competing small radios?

A: There are several factors that differentiate the KX2 from others. First, there's its level of integration. Despite its small size, the KX2 can be configured as a complete station, with a built in wide-range ATU, high-capacity internal battery, attached keyer paddle, and realtime clock (on the KXIO2 option module). This means less additional equipment to carry for a field outing. It's like having a full desktop transceiver system in the palm of your hand.

Second, the KX2 makes very frugal use of its internal battery compared to other DSP-based radios. Receive current drain is as low as 135 mA (backlight and preamp off). The key to this is the use of cascaded, high-efficiency, low-noise DC-to-DC converters. This low current drain allows you to operate for an extended period - from 4 to 10 hours, depending on transmit power level and duty cycle.

There are other important differences. For example, with the KX2 you'll rarely need to use the menu, since controls that get the most use are always available. You'll be able to use the radio in direct sunlight, thanks to its high-contrast, full-custom, transflective LCD. You'll also have clean, crisp filtering, T/R switching, and excellent signal integrity. Your KX2 will sound great on the air, no matter how challenging the operating situation.

Q: Is the KX2 a good choice for first-time HF operators?

A: Yes, for several reasons: First, the basic 10-watt KX2 packs nearly all of the features of a traditional desktop radio into a low-cost package, making it more affordable while not sacrificing versatility. The user who needs full power (100 W) can easily add a KXPA100 later on, if desired; this can improve your signal by about two S-units of signal strength at receiving stations.

Second, the KX2 is very easy to use, with about one-third as many controls as our top-ofthe-line K3S transceiver. We distilled the panel controls down to those most needed for typical operation, while retaining some additional advanced features as menu selections. The tutorial-style owner's manual provides explanations of both how these controls can be used, and why you might want to use them.

Finally, the KX2 is fun to operate-from anywhere. At under one pound, it can inspire firsttime HF users to go beyond their home station, enriching outdoor activities and turning vacations into mini-DXpeditions. The KX2 is also a very capable radio for mobile use, an application many hams discover as they get into the hobby.

New operators will also benefit from Elecraft's outstanding user forum, where they can feel comfortable asking questions on any amateur radio subject.

Q: Can I use the KX2 with SDR (software defined radio) applications and the PX3 panadapter?

A: No. The KX2 is a true SDR, architecturally, but we kept its size, weight, and current drain low by emphasizing features needed during field operation. Panadapters and laptop computers add a lot of extra weight, and are typically considered part of a home station. For this reason we did not include external RX I/Q interface circuitry in the KX2. (However, we offer two other transceivers that have high-performance panadapter options: the K3S with P3 panadapter, and KX3 with PX3 panadapter.) Of course you can connect the KX2 to a computer sound card for use with data-mode communications packages, via the mic and headphone jacks.

The KX2 also includes two built-in data modes (PSK-D and FSK-D) so you can operate in those data modes without a computer. In these modes, text is displayed on the VFO B display as it is decoded, and CW sent with the built-in keyer is automatically converted into PSK31, PSK63, or RTTY signals.

Q: Are there unique applications where the KX2 works best? When would I use a KX3?

A: Refer to the selection guide below.

KX2 KX3
Hand-Held, Pedestrian Mobile (/PM)
Ultra light Backpacking
SOTA (Summits on the air)
Lowest-Cost All-HF-Band Station
High-Performance Contesting
160 Meters: AM Broadcast DXing
Home Station with Panadpter (PX3)
All-mod VHF (6 m included; 2 or 4 m optional)
Mini-DXpeditions, Travel, RV
Camping trips, day hikes, Field Day
Mobile (100-W with KXPA100 ampP

Q: It the KX2 a good choice for SOTA (summits on the air) operation?

A: Yes. We designed the KX2 specifically with SOTA operators in mind. At just 13 ounces (less options), the KX2 should fit into the weight budget for nearly any field excursion. Yet it provides more fe