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Hi David, If you are thinking of printing my short case it's at .QRP Labs QCX case by G8XUL | | | | | | | | | | | QRP Labs QCX case by G8XUL This is my attempt at a case for the

Why not measure the resistances of the two pots? John F5VLF

If you search for R47 you will find that your question have already been answered many times. Please *SEARCH first* before sending a question. Also read the QCX FAQ the answer is

Enno: Programming a microprocessor involves lots of different programs and each does a particular job. You, the "programmer" see only the interface with more or less language-based information. You

I have just bought myself a 3D printer from Aldi (the German supermarket). The maximum size of anything it can create is 135 x 95 x 100 mm, which is pretty restrictive. But I hope it is going to be

(QCX Serial Number: 2011) I r eceived 2 trimmer potentiometers that fit in the R47 location BUT their labels are not "104"as indicated on the manual.? It looks like they are labeled 14m as seen in

Sounds like the dreaded socket problem experienced on the audio output. Those sockets have too tight a fit and yours has cut through the PCB causing a short to ground. That would be my guess Barry

Yes, I've never had any problem with getting the USBasp driver installed. So it does look as if you've been unlucky and got a bad one. 73 Alan G4ZFQ

Is it possible that input voltage reversed or too high unregulated.Ddid you find some spike or surge during that moment? mostly mains surge or lightening strike are possibl;e major reasons.? How ever

Wow, that is bad news. I am curious? what got the GPS and uP. They are downstream of the 5v regulator. 120vac get thru? -- Wes AE6ZM Hereford, AZ

Know how you feel.... I had to wait until the weekend before I was able to get on the air with my QCX-20. So far I’ve worked some state side and some DX. The rig is quite easy to

thanks 73 Mike

This one belongs to a friend of mine. He got it yesterday and he brought it to me as I volunteered to build it for him. I started on it this morning and finished the construction just before

thanks 73 Mike

Yeah, I immediately caught that one.? I think most use the 328P; both of my U3Ss do, anyway.? The other confusing part is that it *seems* to say that you use a 5-pin ICSP configuration instead of

Here's the tutorial I used: https://www.qrp-labs.com/images/qcx/HowToUpdateTheFirmwareOnTheQCXusingAnArduinoUNOandAVRDUDESS.pdf The only glitch or hang-up was the document tells you to use ATmega328

Great info, Georges. Thank you for providing the summary. I'm also going to sandwich the 3x BS170s in between a heatsink and a small flat plate behind them, tapped for 2 screws. Similar to what

Seriously?? I have a working clone of one ( http://img.dxcdn.com/productimages/sku_370842_1.jpg ) sitting here and I was wondering what earthly use there was for it.? I just loaded IDE and ran the

I spent all day on this, using three computers and two different OSs.? None recognize it.? Zadig doesn't find it in "all devices.". I'm stuck in the gate. I even tried several distributions of

I flashed both my U3S and QCX using an Arduino Uno. It turned out to be a lot easier than I expected. And the Uno can be called on to do a lot of other things! There's a pretty good document in the