Hi Daniel Terrific you got it on the air. Just a thought before you suspect all the caps. The ones Hans supplies are Vishay and in my experience are very high quality. Having said that I have damaged

#qcxmini

Hi Johannes It might, but whenever I have jumped down the faulty component rabbit hole, it has always turned out to be me :) 73s Ted

#17m

Steve I have one of these Chinese devices and it works brilliantly without an Arduino Using the instructions I posted in the link, a firmware upgrade takes me about 2 mins 73s Ted

Howard Try this 73s Ted

Firstly both my rigs, QCX40 and QCX20 mini are working superbly. I built the QCX40 over 2 years ago and it resides in an enclosure very similar to the QCX+. I have permanently wired both units so that

#qcx40

I've just tweaked my QCX20 mini referring to Hans' "tune up" video. Just spreading L3 and a tiny bit on L4 took me from 3W at 12v to 4.4W into a QCX dummy load. With no No turns removed, outputting 5.

#qcx20mini

Just completed my QCX20mini, what a fabulous little marvel! Instructions spot on and I didn't put a foot wrong (a first). The alignment was straightforward and stations came piling in as soon as I con

#qcx20mini

I don't know if this would be of any interest, but using this firmware upgrade method takes me 2 mins and is simple Link to instructions Link to all the files you need 73s Ted

So again Kyle Don't get alarmed by all the traffic here, just enjoy the build. Given the fastidious approach of your notes, I am sure you will be fine! 73s Ted

#qcxmini #40m

Greetings Kyle Don't get alarmed by all the traffic here. Bear in mind that QRP Labs has sold well over a thousand of the QCX minis so you are only seeing those with issues here. The QCX mini is a rea

#qcxmini #40m

Fantastic Hans! Thank you for all that you and the team do for us Very much appreciated from all here in Suffolk. Fondest wishes and Happy New Year!!! Ted

When my little marvel made it all the way to Tasmania, that is exactly what I did Alan :) 73s Ted

My QCX20 mini arrived yesterday, the PCBs look beautiful and the inventory checks out absolutely perfectly. I agree Hans, it is a work of glory! Sadly I have a work deadline for tomorrow so I probably

Hi again David Just to bang on a little more about accurating time info, I too have radio clocks (2) and I have also used my mobile phone and an internet source before I started fiddling with GPS.. I

Hi David I have done many experiments with WSPR and the QCX (the mini just arrived this morning :) ) I can tell you that accurate time is essential. I used to set the time manually like you and experi

Hi Tony I hope I am understanding your issue correctly. I have been messing about with various GPS experiments with my QCX40 and WSPR for over a year. Recently on a low power test, the chip I was test

#qcx #qcx40 #wspr

See Hans' past at the bottom of this thread: The recommended solution remains to install the 10uF electrolytic through-hole or tantalum capacitor in parallel with C38, and not to remove C38. C38 does

I think Tony has acquired an original QCX, there are connections on the PCB for a straight key. 73s Ted

Hi Tony Welcome to the forum and congratulations on acquiring the QCX! Yes it supports both straight and iambic keys, in fact on the QCX PCB there are terminals to connect to a straight key which are

Funnily Russ, I was thinking of going the same way. Did you lash them up yourself or did you find an elegant container for them? 73s Ted 2E0THH

#qcxmini