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I had a very similar issue on 40m.? S9+ noise masking the signals. Turned out the noise was from my smps power supply.? Tried a different supply and issue went away. Good luck!

A quick followup - I've just heard that there was a mistake on their site - the price isn't as good as I thought! Still a good mic for this application though imho.

So is there no way to tweek the power out on the QMX+? 73, Randy, KS4L

Thx for the update.Keep positive. Keep us updated.? Lots of help out here.? Sticking to it and thinking through all the 'system' elements works.? These radios are amazing. Fabulous performers for

Greg, I have tried all you have suggested. Ordered 2 new power supplies from Hans. I see no output from the 3 V supply. Also I may have been using wrong type USB C cable for charging only. None of

Marek Perhaps you solved it already. Note the coils are in series, so you can measure for DC continuity end-to-end. First place to assume is any man made solder connections, like here. Even rap lab

That is very helpful, thank you Andreas. George, N9DXP

Hi Marek, the QRP Labs Wiki contains a document ( /g/QRPLabs/wiki/36879 ) about the LPF section. Maybe it could help a bit. 73 Ludwig

PS: it's not complete, though, lacking PA stage, output LPF, etc. PPS: and of course the DSP magic would deserves a block diagram too

There you go... 73, Andreas

For those of you, who haven't watched - Hans reveals a few upcoming features :) Ang gives rough estimate for ssb (for those waiting for this thing).

Another feature request, maybe.. As I was having fun again with my qmx today. I rarely use cw decoder as it is not very accurate (or I just don't know how to set it up properly and run defaults) -

*The 2024 Flight of the Bumblebees is now History.* There were 207 Bumblebee Numbers assigned this year. *Wow!* Phil - K4PQC, and I were really pleased from seeing the interest shown in getting out

Hi, I think I managed to trace a reason. LPF for 30-20 bands has intermittent break. When I remove display and control boards there is a connection. I put thibgs togeter and it works for 10-15minutes

Me too. But it would not be hard to sketch your own block diagram. Best wishes and discovery as you work your rig. Curt

Yes, thanks I did watch this and thought it was excellent.

I did not see a time to install it, but the system works fine without it. I would suggest bringing the QMX+ up first with a current limited power supply as described? in the notes.? Once you have a

Folks, Despite the on-going absence of correct hardware, progress continues on my QMX+.? I'm quickly nearing the end of assembly and haven't seen when I should insert the CR2032 battery.? Did I

I don't know about a block diagram, but I really liked the block by block discussion from Hans on this talk https://www.youtube.com/live/6FheeAv3src

I have a high band QMX, rev3.? I'm chasing a high background noise level on 20m. Over the weekend I tried my QMX in the Flight of the Bumblebees, which provided a good test of the ability to pick