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There is a thread where Hans chimes in about the Zeners. It is a QDX thread. It’s worth finding. I think he added the pads in case the QMX needed them. -- Colin - K6JTH http://tangokeys.com

Indeed, No more zener diodes... But why? 73 Matt, DL1SER

Yes Rhett, my typo, sorry they renamed the channel some time ago, but I forgot to change it in my basic message text so it should read Join the discord page in the *#qcx-qrp-operation* channel to

Interesting that the latest QMX Assembly manual says those diodes are not used so apparently the QMX does not have the Zener diodes installed. 73, Cliff, AE5ZA

Sending from memory does not seem to work yet. Alpha firmware and all. I’ve used straight key and paddles to great success this weekend! Sometimes it’s seems I have to reboot the rig to make the

Low power out was due to a bad coax jumper.? : ( Now FT8 seems to be working (and no finals were blown during this exercise). But CW does not work. If I attempt to send a message, the letter M

Previous posts suggested 32ohms -- 73, Dan? NM3A

Luc, Is #qrp-operation the same channel as #qcx-qrp-operation? Thanks, Rhett KB4HG

BTW, Tx/Rx Param 2 seems to only be relevant to CW. I'm testing FT8 right now (but I didn't mention it in my message). I'm seeing intermittent low power out now. I saw it earlier this afternoon but

Thanks, Mike. Yes, sweeps are with dummy load. I'll try setting Tx/Rx Param 2 to 1. If you check my call on pskreporter right now, you can see how things are going on 20m (both spots and

Tuning rate: single click on right encoder. Familiarize yourself with the QCX operating manual. Much of the CW things on the QMX are coming from the QCX. It will tell you how to change the rate of

I have a completed QMX and have done the 20M sensitivity Mod #2. I wanted to test Receive sensitivity and Output power. I NEED some idea of how to do simple things - is there a manual for another

Why did the chicken cross the road? An old Texas joke goes: to prove to the armadillo that it could be done. This is a pretty convincing shot of 40m long path WSPR mode from near Washington DC to

Did you use a dummy load during the sweeps? In band configuration you'll need to change the Tx/Rx Param 2 from 0's to 1's. Don't know if this affects the plots but it will affect what you hear when

I finally made the L401 modification and updated to firmware 1.00.003. I removed the toroid and rewound it. The only wire I reused was to connect the 80m hole to the 40m hole. Interestingly, things

Ok, here it comes the first CAD model...does not look great but it is a start. To be used you need to scale by 0.4 in each dimension(another mistery, probably imperial/metric). Feedbacks appreciated

I’ve used various earphones from typical ear budds to Heil headsets and a home made Class D amplified 4” speaker ….. the speaker works wonderful and the Heil headsets work great but I wonder

Here's what? Qs look like in the W4MAI ( SK 2006 ) Memorial Sun room monitoring station -- Bill ( The Butcher ), N4QA

One more! -- Bill ( The Butcher ), N4QA

After rewinding L401, swapping C516 and C525 to the correct values, updating firmware to v1.03, and doing a factory reset, the RF Sweep plots look MUCH better and are fine for all bands. Band