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There are modifications for encoder mechanic you can do to get more slide filling.

Hello I am using a QMX and QMX+, but do not like the encoder to tuning the band up and down. Every step is a grid. Is there a replacement possible for the rotary encoder to tune the bands like on a

Thank you Stan, This is so obvious I am not sure why I did not think about it! Sure, I loose autonomy but I will get my 5W till the end. I just hope that it isn't going to be noisy (was my thinking

You might consider posting high-resolution images of your board here on the groups reflector. I've watched the experts offer specific advice about which solder joints to particularly examine. Also,

Hello Alan, thank you for the quick answer. I did the search for bad soldering already. Without finding anything. I kind of know how to solder but I don’t know how to find a problem on a board. So

Corey, It would just shut down. I would have to disconnect the power to get it to reset. In the case no problem. I was testing the RF power output on all bands. Just the normal cables connected

Hi John, Glad you're nearly sorted. I don't use sma fittings on the relay board, I just solder coax direct, there are 3 large pads next to the sma placement. It also allows plenty of clearance should

Rico, This is normal. DC current flows through the inductors (transformers). The most common problem is bad soldering, carefully check the quality of all joints. 73 Alan G4ZFQ

Hello experts ? I just finished my build of the QMX 10-20m. During the first tests I found that the device is absolutely deaf on all bands. Measuring the board I figured that I have a short over

Just received my qmx 20-10 ... really the best Xmas gift ever ? thanks Hans and team, wish a very nice Xmas and a happy new year.... vy 73 de Udo DF4BJ

I use a talent cell 12/3000 without any problems... in home shack I use the loading adapter of this powerbank.. works great since months vy 73 de Udo DF4BJ

Hi Roland, Is the resistance between R2/R3 and D1 still “zero” after you have reinstalled C3? If so, as suggested by Evan, please check if there is any solder bridge/whisker. Please check both

Thanks Nick. How many PA transistors do you have? I thought I'd fitted three in mine but I see there's only one. I bought extra BS170s at the time. I'm now looking at housing the transmitter. I

I killed my QDX running off of a fully charged lifepo4. Reached out to Jeff and now I have a working QDX again. Awesome work Jeff. thanks -- 73s, AA6ST Sameer

Bruce, the topic is using PD power banks. Not wall chargers. I've been doing it for years myself. I even wrote an article for QRP Quarterly on the subject back in mid 2020. Wall chargers are indeed

I had a similar temperature-related issue with my QMX.? It would have loud 'digital' noise for several seconds, then be perfect.? And I took it out on a POTA activation, and the noise lasted longer

Surprisingly enough, Ikea makes some decent cables.

Those 1956 eyeballs still have lotsa miles left in them. But after 11PM they seem to go a bit haywire. -- Jim VE4BWG

Essager is good brand with good quality for the price. Combine it with usb isolator modul and you are safe.

No RFI problems both in or out at my shack at current setup. Power is low enough, all ground loops eliminated, usb isolated, single point grounding, coax cables cut to lenght to avoid any accidental