Groups like this tend to be a gathering point for those building and troubleshooting kits offered (in this case) by QRPLabs. One thing I have noticed, and this applies to a lot off other similar group

Hello, I have several QLG1 GPS Receiver Modules. It has the YIC51612 Chip. I use one for the U3S - working perfectly. The other one should be used in a different environment. Therefore I need to set t

Well I FINALLY got my 3rd Mini (20M) WORKING. For the short story, IC6 and IC9 were bad and there was a bad solder joint on IC10. After the last round of help from here I used the cheapy O-scope and t

Having read all i can find on qcx cat control, I need to ask the group for confirmation. From QCX web pages "Most PCs do not have actual serial ports anymore and the typical set-up will be to use a US

Greetings every one, I have just went thru the Adjustment of I_Q balance which appears to have worked OK. The current issue is that the bottom text of my LCD line is missing, I can not see the "under

Hi folks, Hans has asked me to be the ‘unofficial’ QCX Challenge Manager, which I gladly accepted. It’s one less thing to worry for Hans, I think he can use his time better to ship out some more QCX-

#qcx40 Occasionally I have trouble keying from either the built-in or straight key attached and I get a ‘G’ next to the frequency. Anyone able to provide info on this?

Since having built and really liking the QCX-Mini, I started looking for things like stands, etc that could be 3D printed and this thread is for those of you that have 3D printers or at least access t

I'm making an interface cable with 2 TRS plugs to connect the QLG1 to my 17m mini. The Paddle plug is straightforward. PPS, Serial, and Ground tied to the appropriate header pings on the QLG. However,

I've seen this question asked before but not the answer. I have a USB TTL interface between my QCX Mini and MacBook. I'm trying to use the macOS terminal (actually the "screen" utility) to communicate

So, I just got my qcx plus put together and fired it up. First problem was blank screen. Adjusted r47 to no avail. Disconnected power and went back through everything. Discovered that I, somehow, fail

About a month ago I reported here with several other folks my 20m mini was not working. I had no normal receiver hiss and unable to align I-Q bal and phase low-high. I could hear and adjust BPF cap to

Hi everyone, my name is Roy and i’ve been out of amateur radio for around 25 years, just taken it up again in June 2020. Two weeks ago I bought the QCX plus kit and the TXCO Board as well as the 20wat

Glad to say my QCX Mini up and running now. I had a bit of a wait from the supplier for the NE5532 chips, but the replacements for IC8 and IC10 went in nicely and the tune up was a snap thanks to the

I got a QLG1 GPS receiver for Christmas and put it together over the holiday break. It didn't work - no data stream, no apparent satellites captured, etc. Having successfully completed three QCX radio

I built a QCX mini for 40m. Intermittently it works fine. Other times there is a very loud buzz. I made sure the case was connected to ground and it still buzzes. Here is a video with the buzz coming

My Kit calls for 181 capacitors in C27 and C28. My kit came with only 1 180 pF capacitor (I thought). So, I put it in C27 and for C28, I cobbled one together using 4 capacitors to add up to 180 pF out

I attempted to update the firmware in my QCX+ tonight to T1.07a. I used an older firmware chip - T1.03 just in case something went wrong which it apparently happened. The process completed successfull

I've built 20 m QCX (V3 board, 1.07 firmware). Turns on OK, Alignment went fine. RX works fine, but TX power is low - 1.1 W @ 12.2 V battery. Power consumption is ok on RX, 120 mA, but on TX - only 32

Original classic QCX transceiver for 30 meters with V1.05B firmware and with QRP Labs 50 watt amplifier. Amp is un-built with supplied metal case. Transceiver w/amp for $130 w/USPS shipping included.