Hello! I have problem with the fist step in alignment of my QCX mini 20m Rev1. There is no loud sound in earphones as specified in manual in step 8.7 Peak BPF. The sound can be heard but it's too low

My QCX+ 30M kit works great when I first turn it on, but after a few minutes the audio begins to get scratchy sounding and then completely fades away. After the radio has been off for a number of hour

Hello, I have had some success modifying my three QCX Classics to have AGC to prevent eardrum overload. I've tried to keep it simple and so it uses only 6 additional components, 3 capacitors, 2 diodes

Just thought this might help someone with old eyes. Counting the windings on T1 several times and getting different numbers. I shook the rust out of my old brain and took a pix with my I-Phone. Was an

After building my 40m QCX-mini, I was able to successfully tweak the BPF, IQ balance, and audio phase shift high/low. After a couple tweaks of the coils I was getting about 4 watts out into the QRPLab

Hi all, Finished building my mini. On power up 12v drops to 1V without boards plugged in. Suspect short circuit but how to find? Diode is ok. Hear ticking sound on headphones. kind regards, Jan PA4J

I bought the clock and since there was such a warning about getting a very clean 5 v power I'm looking for a nice but inexpensive power supply. Anyone have recommendations?

Hi All, Has anyone encountered an intermittent issue with QCX mini RIT. There are a few separate (?) issues: 1. The RIT sometimes is not applied to the receive. I can adjust the value and it appears o

MNI TNX OM CU ON 20m WID MY QCX BEST 73 FROM DON E20MIO

I'm so new here I don't own a QCX Mini yet, but I expect to get one soon.... can anyone tell me what the shipping costs are and are there costs to get it into the US? I have to have all me figures rea

When I started to align my 10m QCX mini I noticed that the readings for I-Q bal (menu 8.8) appeared to be unstable. Several days on and numerous re-solderings and measurements I am no further forward.

I have tried to contact Hans via the website and heard nothing back. Anyone know an actual e-mail that I can get a hold of him at? LCD is one line of blocks. I have soldered a spare LCD to the back of

No way ....! for a 'smoke test'. The PTT jack goes straight to the +5V on the ring of the plug. Chances would be high, if you insert by mistake a plug and power is on, that you will ground the +5V and

Hi All, Question on the QCX display when used with WSPR and GPS. I interfaced an old Trimble ACE III GPS to the QCX and it seems to be working as expected. The time syncs after the first WSPR cycle. A

The best I can get after adjusting LPF toroids is 1.7W measured with the onboard RF Pwr tool. Power drops on keying. Using a 12.2vdc 4A power supply. Re counted all the toroid windings I had to fix Q7

I added a switch to my qcx mini to bypass the cw filter for wspr rx operation. I figured the loss in gain bypassing it would be around 18dB, but the gain in audio level at 1500Hz would be 70dB accordi

Putting together my QCX-mini I inadvertently cracked C14 (1nF, 50v smd) while trimming the lead from C12. I went ahead and completed the assembly thinking I'd find a replacement. Now I'm having troubl

Hi, I have recently completed a Ultimate3S, and have it working well, and talking to the GPS module. My main interest is WSPR, and I have it transmitting in this mode, but I am not getting recieved. I

I just bought and assembled a qcx+ kit. I had the problem that the bpf filter did not peak. I did not get a nice square block signal from the Si5351. Then I got a "Si5351 error" message on the screen

Hi all I have finally uploaded a video on testing the QCX-mini, the test jig itself is the main focus of the video and is very neat and interesting; 54 pogo pins connect the board under test, to the t