Two Compact Microphones for the Elecraft KX2 & KX3

Many thanks to Dean (KG7WGX) who recently shared a couple of interesting microphone alternatives for voice/SSB ops who use the Elecraft KX2 or KX3—especially in portable or pedestrian mobile setups.

Dean mentioned that while the stock Elecraft MH3 mic is excellent, it can feel a bit bulky for field use, especially when packing light for multi-mile treks. He also pointed out that unlike the KX2, the KX3 lacks a built-in microphone, which makes SSB less convenient without a dedicated mic.

If you’re considering a minimalist SSB setup, here are two compact, British-made mini-mic options that might be worth exploring:

M0JKS Mini-Mic

This mini-mic is fully featured with PTT and UP/DN buttons, offering near-complete MH3 emulation. Dean noted that it’s particularly useful for pedestrian mobile, especially if you’re using Morse frequency annunciation—allowing you to change frequency without removing the rig from your pack.

PTT + UP/DN buttons for full MH3 emulation
TRRS connector
Available assembled (~$38 USD shipped)
Video Review via AE5X
Available on eBay (note: eBay UK partner link) and Etsy (ships to the U.S.)

G7UFO Mini-Mic

Based on the K6ARK mini-mic design, this compact unit stacks a condenser mic element and PTT switch inside a right-angle TRS plug and printed housing. It’s available either as a kit (for confident kit builders) or fully assembled for plug-and-play use.

Based on the K6ARK mini-mic design
TRS cable, PTT only
Available as a kit ($17) or assembled ($27)
Order from G7UFO (U.S. shipping via PayPal)

Thanks again, Dean, for the excellent recommendations!

Elecraft now accepting orders for the KX3December 27, 2011In "Announcements"

A QRP SSB POTA activation using only the Elecraft KX2’s internal microphone!December 28, 2022In "Field Reports"

Field Radio Kit Gallery: VE6VID’s KX2 SOTA KitNovember 2, 2023In "Field Radio Kits"

6 thoughts on “Two Compact Microphones for the Elecraft KX2 & KX3”

The KX3 does actually have a built in PTT button. It’s marked as the XMIT/TUNE/0 button on the bottom left corner. It’s great because it allows you to plug in a headset without the need of a PTT adapter.

Thomas Witherspoon says:

June 7, 2025 at 7:56 am

Thank you for that correction! You’re right, and I forgot. I’ve corrected this in the post. Thanks again.

Reply
1. Garry Parrish says:
  
  June 7, 2025 at 12:24 pm
  
  Hello Thomas, this is the only way I can find to ask a general question to you or the QRP group about a product I am interested in. It is listed on Amazon as: 10W, 8 band, HF QRP SDR transceiver maybe made by Moudoauer? How can I send you a snag-it copy of the ad? 73, thanks, Garry AA6GW
  
  Reply
  1. Thomas Witherspoon says:
    
    June 8, 2025 at 6:11 am
    
    Hi, Garry,
    
    I’m not familiar with this radio but I have to assume it might be a version of the uSDX? This would be a great question to post on the http://QRPer.net forum because there’s a decent likelihood someone there has experience with this radio. I would not be able to comment on it because I’ve never used or owned one.
    
    Cheers,
    Thomas
    
    Reply

I wondered where the influx of orders were coming from! Thanks Thomas.

The Turret mic isn’t available as a kit yet – the K6ARK one is though.

I’ve been working on an improved v2 case for the Turret which adds a bit more grip as well as getting rid of the ‘join gaps’ at the bottom. Components are all the same though. I’ll post on my shop when thats ready.

I do have a M0JKS Mic as well. Maybe mics are the “paddles” for SSB activators? – you can’t have too many