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On 21/02/2025 10:49, 410733 via groups.io wrote: If you want a tap for the RX antenna it might be possible but to do that without affecting the QMX operation will need very careful

Joe I'm not sure what you want to do but IF tap is not possible. The QMX does not follow normal receiver practices. With very delicate work you might get IQ out independently but would need to be

?Rich, Don’t despair. Get some low temp ChipQuick and read/watch re the use of that interesting product. Beware there are a few different ChipQuick products, each for different kinds of

Update on this issue: I saw the post about frequent problems with the PCM1804 and thought this would kind of fit to the problems my QMX had, so instead of testing further I just replaced the PCM1804,

Thanks Stan for all your help. "But still only 60mA and no USB drive?" Yes: only 60mA and no USB "You don't have a current limit set to less than about 200mA do you?" I've turned it up to 500 mA and

Larry, Your toroids look wonderful! After a few more you can do them in your sleep or while watching Jeopardy and Wheel with your wife. I find winding toroids like what I used to see with my

This post has scrolled down really fast. Maybe this reply will get it a bit more focus. I'd really like to know if I'm on the right track - and I'm lost in looking for a good point on the board to tap

Jerry, thank you for explanation. Being real "amateur" in RF I assumed this was a real resistance :) I can learn something new every day :) 73 Jindra

But it is not. I really do not understand why some of this companyes dont provide schematic. Will they loose money, hardly noticable Will they make our life harder, yes Can we revers engeneer it,

Hello Nico, after some back and forth with ATU 10 and converted ATU 100, I decided on a 4S tuner from the four States QRP Group. This small, fine manual tuner works perfectly and is fun to set up. The

Those voltages all look fine for a v1 QMX. The CPU has to be running in the bootloader to have set the PWR_HOLD signal, so it's at least partially OK. And it won't try to start up the two smps

Enzo M0KTZ wrote… That is if it has an absorptive (Wheatstone aka Tayloe) SWR bridge. Without that, the radio could see a high SWR while you were tuning. With the absorptive bridge, the radio only

Thanks! Sounds good. [email protected]> wrote:

Nico, I don't sell tuners HI If your tuner does not have a "tune" position, just use the "Tune SWR" tool in your QMX, that works at reduced TX power, and will put less strain on the finals. Perhaps

So the MFJ 949D would only show an swr of around 3 to the radio? [email protected]> wrote:

This kit might be interesting: http://www.qrpkits.com/wallwarttamer.html * Takes in AC or DC and provides clean, adjustable DC output * Reuse those surplus wall warts or computer supplies as DC power

Nico, manual tuners normally have a "tune" position, which engages some sort of SWR bridge. When the SWR bridge in engaged, the rig sees a maximum SWR that does not exceed? between 2:1 and 3:1

I am getting myself a manual tuner soon. I was watching some videos on YouTube because I had no idea how to use them. I saw people just holding PTT even with 3+ swr. How would I do it? Just quickly

I agree with Chuck here: the more you use the rig on the air, the easier the whole zero-beating process will be for you. It's an instructive game. Alas, you don't need to literally "zero"-beat on a

I have been using Spectroid on my Android phone.? It works pretty well. An "Auto Tune" option would be nice in the QMX but in the whole scheme of new function priorities, it would be down farther on