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... AND to freely offering so much good troubleshooting advice. Stan and others like him are a real treasure for this community. Even though my home-built high band QMX is working wonderfully, I come

This points to a problem with the PA stage, it should take more like 500 mA on Tx.? I'd start by checking the continuity of L502 and T501, especially the primary.? If you have a scope check the

I also have this incredibly loud noise on startup from time to time. I have found that if I just turn the audio volume down it is fine. It's as if the software "forgets" the audio setting sometimes,

Kevin, my QMX has just returned from the States, where Jeff Moore did an amazing job fixing the many problems it had. I asked him to mail it to my post office parcel locker, which he did. All went

Hello Pascal I was trying to work out if the display was the RF or just the envelope (at AF). Guido’s compression ratio was set to 8 ( 8 levels) > Personally I think what you have there is a

Only Hantek’s knows why a 51 MHz signal is measured 50 kHz ! Those photos were taken from my experience with a homebrew 6 meter class E SDR TRx. https://youtu.be/Cc1QNkCKDo4?si=RJy8imMRPsoSVC_9 An

Is it somehow be possible that the ABS remembers the parameters for each band and that the tuner automatically recalls the last parameters if bands are switched either via the radio or wia cat

Hi all, just finished my QMX mid band and seeing no TX power in the diagnostics page. What I am seeing: 9.4v on TX SWR jumps between 1.0 and 3.0 with a dummy load No wattage in TX in diag page or on

Hello Pierre I see no reason why not, though I have not tested it. All these digi modes just require an SSB transmitter. Any digi mode designer wisely makes his modulation result suitable for any

Will FreeDV work with the coming firmware? 73 - Pierre - FK8IH

Right Evan and Don. Here's what I came up with using the following 2 parts from

Hello Pascal Peak Envelope Power (PEP) of all three would be the same. PEP is what you show being measured in your photograph, by peak-peak voltage converted to power (by Vpp * Vpp / 400). That is

Folks, after having build at least three QMX rigs, three QMX+, and uncountable number of QCX+ and QDX, I thought I'd share with you a couple tricks / tips that have helped me save a bit of

Steve, I believe the cascading happens automatically.? You just choose your passband then choose your center frequency and the software chooses the two filters for you.? The idea is the software

I wish to learn a practical way of SSB power measurement for comparison between classic SSB, your CESSB and Guido’s CAMSSB or Constant Amplitude Modulation. From my previously attached photo,

Hi, I got my QMX+ some days ago and started to play around... Having GQRX and SoapyAudio installed, "QMX-Transceiver" pops up as a supported device...? I did not even have to compile something, just

Did a member order the component "QMX SMPS boards" from the shop and receive it in good order, nothing broken? After a lot of thinking and hesitations between several transceiver kits I eventually

Thanks. I watched N2DI's video. It still doesn't explain how to cascade two 300 Hz filters, centered at 500 and 650 Hz, which is the example shown graphically in the manual. 73, Steve, N2IC

Would it not be simpler to build an adapter? I plan to do that. I have over nine wired mics, with the mic connected to the tip and the PTT to the ring. 73 Evan AC9TU

Hi Steve It's tricky to get your head around.? I thought I understood it but I really didn't until I watched this great video- recommended, I'm sure it will