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Dear AL, On the output side of your 5 VDC power supply put a 100ufd cap at 16VDC, I think the 2.2ufd is much too small for it to have any reserve current if the U3S needs it.??? You may even

The start up splash screen gives the version number at the right hand end of the top line for a few seconds after power is applied each time the QCX is switched on. 73, Bob

Turn it on. It will display the version of the firmware when it starts.

I got my U3S kit a couple of days ago and have pretty much finished the assembly.? I verified that the GPS module is working.? It even picks up the satellites down in the basement shop.? I've also

I just flashed using AVRDUDESS and it gave no error but is there any place I can go to on the QCX to see for sure if it took?? Thanks

Robin, let me say that if you are comfortable a 10 WPM you are not 'learning' CW, you are now a CW OP. Congrats. Now you are just increasing your speed! Like all the res of us. Regarding your RF

Image is taken from the manual. From the looks of it pretty much a straight forward audio amp all the way back to the Volume control. The TX Mute Switch looks like it's supposed to short the audio

Well, on 80 meters you probably need more than a short counterpoise, and you do not mention how long the random wire is.? A tuner can load up all kinds of poor antennas and just results in RF trying

The continuity of the connector seems fine. I rechecked, and pins 6 and 7 of IC10 are still showing a bit high - around 5.7 volts each, all others seem normal. Does the info from the audio ch 1 and

I'm using a 3S LiPo battery (+/- 11.3V). Antenna is located in an attic and equipment is in a first floor room. A?short?counterpoise is connected at the L Tuner and runs around the floor. (I'm

-- What are you using for a power supply?? Battery or AC supply?? You might be getting RF into the supply. Also, that antenna is going to use the rig as a counterpoise if you are not grounded well

OK Hans, thanks for the update. Merry Christmas and a Happy New year to to you and your elves. 73 Ken G4APB

Robin; Now I am no expert in this area but what what I would suggest it appears you are not well grounded. I have the QCX-20 and don't experience the issues you are. However I have a Yaesu

I am not as experienced as many of you out there but feel that some recent experiences and issues?may be?useful?for some others completing a?kit for the first time Firstly, I managed to build the

Wish I had a printer heck I don’t even have room for one. Full time RV Sent from my iPhone

Thanks guys - attached picture of G3XVL's short case version. I expect pictures from you :-) 73,Dave

ok, i got rid of my short circuit I have again 5v on the output of ic1, but my atmega is still not dismal and ic3 is abnormally hot and I have the bf again, but no mixing so no reception I have 5v on

Thanks guys - attached picture of G3XVL's short case version. ? I expect pictures from you :-) ? 73,Dave

I believe you're right - I think I wrote down pins 5,6,7, and 8 backwards - 5=8, 6=7, etc. The earphone jack is already externally mounted to my case. ?I'm getting a bit of a pop and hiss on key

Dear Al, Just for giggles.?? unplug your GPS module and see if that changes anything.?? Also put some .01MFD and .001 Capacitors on the input and output side of your 5 V DC regulator card. Check