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The current UK population is around 69,438,564 humans, source https://www.worldometers.info/world-population/uk-population/ Are you really saying that 22,914,726 ?humans in the UK have actual

After replacing L403 with the T37-6 toroid, I found no difference in the output power. I buttoned everything up and called it a day. On to repairing the original QMX to see if I can breathe life into

Well said Chris, Oxford Instruments are a really top-class and world-leading company

I should have clarified. I do this with the tuner in "Tune" or low output mode. I did not know that other method was available and it is clearly superior. -- 73 Michael N6QP Up in Thin R

By entering the command line mmsys.cpl you will be taken to a sound settings window. Under the Recording tab you will see....digital audio interface QDX transceiver....click on? the listen tab and

I read all the threads about the 20M band audio sweep and low output power problem. I tried to tune the LPF without any significant result and I stop doing these attempts to improve my QDX. I just

Hi Dan, Before investing in the new SMPS boards, I suggest first verifying that there is no problem with the motherboard.? With both SMPS boards removed, measure the resistance to ground of the Vdd

I burn the end coating off with a lighter, then clean off the black carbon coating with a bit of solvent and coat with flux before soldering.

It's a great little radio, John. I still love the QCX radios. They're easyySI4732 to build, fun to use and surprisingly capable. Perfect for SOTA/ POTA

Jim, the bias 'smps' is the isolated circuitry at the upper left of page 5 of the schematics.? It feeds the TX_BIAS to the input and output sides of the LPFs at the top right of page 5. From an

On 3/23/25 I had a CW practice / rag chew session on 20 meters. I worked three stations. Twenty meters got crowed so I QSYed to 30 meters: Date /

I suspect you just need to update 'hamlib' in WSJT-X.? The definition for QMX was changed recently, and something broke with it in hamlib 4.6.1, so you need to update to hamlib 4.6.2 or

Dan, yes, your SMPS boards are both bad.? It must have been a bad short you made with that probe. If you want to try to repair them yourself: - On the 3.3V SMPS, it is most likely D109 that is

I agree, turning off SWR protection to tune is not a good idea. Try going into the Menu: Hardware: SWR Measurement. This gives a carrier at 1/4 output power (if Menu: Protection: Tune % is set to

Hi Ken, The case is plastic. 73 Roger MW0IDX

Many Hans makes for light work!!

Nate, Thanks for your answer. About the 20M band I already finely tuned the Audio gain (db) in Putty in order to get on each band a +30dB signal strength in JS8Call and for that I have set 30M to 76,

If it's the coiled wire like in some telephone cords, I managed to solder it. Just don't expect it to look pretty, because the solder doesn't want to stick to the poly cord for some reason. Anyway,

Dan, both values are not bad. I guess your controller STM32 isn't broken. So like I wrote before: 73 Ludwig

Awesome ... thanks, all! - Bruce K1FFX