Finished my first QDX build a couple of weeks ago. I have been impressed with the number of contacts I have made into Europe from Ohio using FT8 and 5 watts into an End Fed Half Wave on 40M. #qdx #qrplabs

I've started @2U0HZY #qdx #qrplabs #qrp #owthatironshot

Ah! Two of these arrived yesterday, they took a week to wend their way from Turkey to Guernsey, not too shabby!

One for me and one for @MU0WLV. Our irons are tinned and hot, our sponges, moist. Let the build off commence!
#qdx #qrplabs #qrp #owthatironshot

Smoke test went sort of well: at least no smoke. But the unit draws 250 mA at 7 VDC, which is the current limit of the power supply. There must be a short somewhere. #qcx #qrp #QRPLabs #HamRadio

Assembly done. Now off to the smoke test. But I’ll wash my sweaty hands first, and then clean up the desk. #qmx #HamRadio #qrp #QRPLabs

Main PCB completed. #qmx #HamRadio #qrp #QRPLabs

Repaired with the help of @F4JWJ Merci beaucoup Pierre! #qmx #HamRadio #qrp #QRPLabs

This time I used a hot air gun for desoldering my damaged SMD parts on the #qmx buck converter board to replace them by new ones. I replaced Q104 but lost one of the connector pads on Q103. It probably was damaged during my initial tries to move Q103 with the soldering iron. The remaining trace of Q103 is too short to make a safe connection. I‘ll have to order a new buck converter. The rest of the kit is finished. Let's wait again! #HamRadio #qrp #QRPLabs

Yesterday evening I finished the main board without the buck converters (some very narrow spaces between the components). The excellent manual by #QRPLabs helped a lot. #qmx #HamRadio #qrp

I managed to desolder both components. It was no fun and needed excessive heat. Not sure if both parts have survived the stress. I#qmx #HamRadio #qrp #QRPLabs

Thinking about getting the #QRP #KitRadio for #HamRadio Digital modes, especially interested in #JS8Call. I think to get my feet wet, I'm going to go with the #QRPLabs QDX transceiver. Which band selection would be best to start and why?
#AmateurRadio

I’m definitely a firm believer in the power of JS8Call. Hadn’t got down to the radio shack for a couple of days, found a message from VK2ZTY, they’re running 5 watts from a QRPLabs QDX. I’m running 5 watts from a Hermes-Lite SDR transceiver. I wish I’d been down here to reply, it would have been my first QRP QSO with Australia! 9615 miles with a ground mounted trap vertical.

#JS8Call #qrp #QRPLabs

Another post from my previous instance. Here's some QRP-Labs QMX/QCX slimline knobs I designed and printed. They just press fit on to the shafts. They're a little more ergonomic than the stock ones and sit alongside other gear in a bag better. STL on my Printables page:

https://www.printables.com/model/522261-qrp-labs-qcxqmx-6mm-low-profile-knobs

#HamRadio #QRPLabs #QMX #3dPrinting #3dDesign

Since no posts from my previous instances carried over (and it looks like not all my followers either, oh well) here's some shots of my last few #POTA activations! The radio in each of these is the new QRP-Labs QMX at apx 3-4W. The antenna in 3 of them is a Buddistick Pro and one is a 20m Sparkplug EFHW. The bike is a Biktrix Juggernaut Duo Classic. The dog is an Australian Shepherd named Bertie and she's the best #hamradio dog ever.
#hamradio #cwops #buddistick #qrplabs #qrp #portable

Still pondering if I should try slinging to #QRPLabs location and try to see if I can buy a kit there and then...

They were somewhere in Mugla or Milas but I'm not sure exactly where, or if they have a 'shop front'... :P

I made some low profile knobs for the QMX. I didn’t like the feel of the stock ones and with the possible SSB update I can foresee a lot of tuning around with the VFO knob. The STL is on my Printables page, link in bio.

#hamradio #qrplabs #qmx #3dprinting

Latest Episode of the ICQPodcast Released - Ham Radio 2023 Round-Up.
Free Download - https://icqpodcast.com/download-the-show/2023/7/2/icq-podcast-episode-407-ham-radio-2023-round-up
Support the show - http://icqpodcast.com/donate
#AmateurRadio #hamradio #hamradio2023 #ofcom #elecraft #icom #acom #qrplabs #ELAD #IARU #Arriona

For anyone who has or will build a QRP-Labs QMX this will help. I was cranking out FT8 contacts on 20m last night so it certainly works without the mod but this should help the 20m filter problem:

http://qrp-labs.com/qmx/qmx20m.html

#qrplabs #qmx

To say that Hans Summers G0UPL has set the bar high for quality amateur radio kits would be a huge understatement- he’s launched the bar into the ionosphere. #HamRadio #QRPLabs

Not bad progress on the QDX build today. Capacitors, inductors, diodes and final transistors installed. (With sockets since I’ll almost certainly end up blowing them!) Next: The output transformer. But that’s a task for another day. Eyesight is still capable of through-hole construction! #QRPLabs #QDX #HamRadio