Elecraft KX3 Preview

Just heard about this little puppy. Need to save my spare pennies…


  • 160-6 meter ham bands; general coverage from 1.6-30 MHz (optional broadcast-band filter module covers 0.5-1.6 KHz)
  • All modes: SSB, CW, Data (four sub-modes), AM FM
  • Ultra-compact size: 3.4″H x 7.4″W x 1.7″D; 18 oz. (less options)
  • Rear tilt feet fold up for transport
  • Custom high-contrast LCD with alphanumeric text display
  • Current drain as low as 150 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
  • Low-noise synthesizer with 1-Hz tuning resolution
  • Firmware updateable via provided application software


  • Quadrature down-sampling mixer compatible with PC-based SDR (software-defined-radio) applications
  • Receiver I/Q outputs for use with PC soundcard
  • Narrow roofing filter option with four bandwidths (500Hz, 1500Hz, 2700Hz, 3800Hz) for excellent dynamic range
  • Switchable preamp (2 levels) and attenuator (2 levels)
  • 8-band receive audio equalizer
  • Dual watch over ±10kHz range; uses applicable roofing filter
  • Easy-to-use PassBand Tuning (PBT) for shift/width/hi-cut/lo-cut; roofing filters automatically track DSP filter settings
  • Automatic and manual notch filtering; adjustable noise reduction and noise blanking; binaural audio effects for enhanced receive
  • Center-tuning indicator for CW and data modes
  • Built-in speaker; stereo jack for headphones/external speakers


  • Adjustable output, 0.1 to 10W+ (100W+ with KXPA100 amp)
  • Rugged, SWR and temperature-protected final amplifier stage
  • Optional MH3 microphone with PT and UP/DOWN functions
  • Optional attached keyer paddle with spacing adjustment
  • Switchable PA output impedance for efficient 5-W or 10-W use
  • Fast, silent, PIN-diode T-R switching – no relays
  • DSP speech processing for excellent “punch”
  • 8 band equalizer tailors passband to your voice and microphone


  • Built in digital voice recorder (DVR) with two message buffers
  • Internal CW keyer with 8-50 WPM range
  • Six CW/DATA message memories
  • 100 general-purpose memories store VFO A/B, modes, etc.
  • Accessory/RS-232 port for computer control using supplied cable
  • Full remote-control command set works with most amateur radio software applications (emulates Elecraft K3)
  • One-click firmware upgrades via the web (with free PC software)
  • Optional mobile bracket compatible with RAM-mounts
  • Tutorial-style manual ideal for new hams


  • KXFLE Roofing Filter Module (500/1500/2700/3800 Hz)
  • KXAT3 Internal, Wide-Range 20-W Automatic Antenna Tuner
  • KXAM3 Broadcast Band Filter Module (0.5-1.6 MHz)
  • KXBT3 Internal 8-AA Cell Battery Pack with NiMH Charger (Batteries not supplied; nonrechanrgeable batteries can also be used)
  • KXPD3 Precision Keyer Paddle
  • KXMM3 Mobile Mount Bracket
  • MH3 Hand Microphone with UP/DN Controls
  • KUSB RS232 to USB Adapter
  • KXPA100 High-Performance 160-6 meter, 100-W Amplifier; usable with most 5 to 10 W transceivers KXAT100 Wide-Range 100-W ATU with Dual Anenna Jacks (attaches to KXPA100 module)
(h/t: QRP-ARCI, W2LJ and AE5X)

Leave a Comment

Subscribe FREE to AmateurRadio.com's
Amateur Radio Newsletter
News, Opinion, Giveaways & More!

Join over 7,000 subscribers!
We never share your e-mail address.

Also available via RSS feed, Twitter, and Facebook.

Subscribe FREE to AmateurRadio.com's
Amateur Radio Newsletter

We never share your e-mail address.

Please support our generous sponsors who make AmateurRadio.com possible:


Hip Ham Shirts

Georgia Copper
Expert Linears


Ni4L Antennas

R&L Electronics

Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on AmateurRadio.com!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!

  • Matt W1MST, Managing Editor

Sign up for our free
Amateur Radio Newsletter

Enter your e-mail address: