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Hi Curt, Yes, I was aware of that. As I said earlier problem was intermitent which was tricky to trace. All good now. Thanks for your help. --------------------------------- 73 de Marek SP9TKW

Hi Ludwig, Yes I red document before, but I could not trace the problem as sometimes it was working sometimes did not. Anyway resoldered all connections for 30/20 LPF and issue seems to go away. I

How did you identify that the PCM 1804 was defective before removing it ? My e-mail ist ok on QRZ.com -- Martin DK3UW

According to the proposed QSX, it states 'Dual Microphone inputs (mobile phone headset with VOX, or RJ45 connector for Kenwood/Yaesu mics)'. I am not sure why Hans did not go this route for the

Will do, can't stop now. TNX ... 73 Don

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