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Ken a real quick thing to try is a factory reset. Before doing it write down the values of the Reference frequency and the System frequency so you can put those back in after the reset to maintain

Hi Chris There's the official hardware diagnostics screen now which presents things tidily. Or the secret debug screen I use in development, which presents information in a haphazard way which is

Hi all Just to be clear, the 20m receive sensitivity issue and resolution modification described here http://qrp-labs.com/qmx/qmx20m.html is a thing of the past. I'm not sure why this has caused any

I have one of the first QCX-Minis that was assembled by Han's crew in late 2020. I've only operated once for about 30 minutes during a QRP Hotels on the Air at Pacificon 2021 and it worked great. It's

Yes, it appears to be so. As Willie noted, once you get over the audio threshold (which it clearly does), it's full power out regardless. I actually played with pavucontrol, btw, but the output was

Hi Jacques, Just wondering if you've gotten WSPR beacon mode to work? I haven't. 73, Mitch NK3H

I have already proceeded to purchase both the Q103 and the D101 for replacement, the problem is restoring the earth contacts. but that's what I want to do to turn it on as soon as possible. Giuseppe

The hot air is probably the best, but I've made work by using low temp solder then moving the iron from leg leg and slightly pressing to the side so get it to slip off. I've also carefully lifted two

To remove these devices I wouldn't use a soldering iron at all. Hot air only. First flood the area with some good liquid flux like the Amtech tacky flux I have, then wave the hot air around like a

I would be inclined to get a new AOD403 Mosfet and try to repair the board, while waiting for the new one. A little glue and some solder and this could maybe be repaired?

Option #2 was incorporated into the assembly manual. Make sure you've downloaded the latest 1.00g assembly manual and refer to this page for avoiding pitfalls

Michael, Use the latest Assy manual and option #2 has been incorporated as the way to do it so it isn't mentioned as "option 2" any more. 73, Cliff, AE5ZA

hi Paul and Kris and all, I used a normal soldering iron for the pins and then an air soldering iron but unfortunately it didn't help even if I was careful, I am attaching some photos 73. Giuseppe

Hi Hans, Can you tell me if you had any problems with the soldering of the USB-C connector on the QMX board? My board doesn't seem to have any solder on it at all! I can does this myself under a

I received my kit here in he USA and need to know this! I see the latest assembly instructions and don't think that the option #2 is still there? Can someone please explain what Han's has recommended

Chris, Good info here on the diagnostics screen.? It was added to firmware version 1_00_006. /g/QRPLabs/topic/100394340#106422 Walt - KK4DF

Could Q103 be removed entirely and replaced with a short between it's drain and source? It's function seem to be to protect against reverse polarity on the supply, if it wasn't there all that would

Karl, I got the 0.1uF capacitor mailed off to you, today. Samsung 0.1uF 5% 50V X7R 0603 73, Rick NF6G

Giuseppe-- Question for you: When you broke Q103, what technique were you using to unsolder it? Did Q103 actually break, unrepairably? I ask, so I can make a different mistake when I try to fix

My bright idea is very near impossible! The capacitor is too big, difficult to position, beyond difficult to hold in position and is way too big to fit in box if it works. Please see picture. How you