Just a general question, for those that have built the clock kit, what do you use for a power supply? For portable use? For permanent use in the home shack? I read the part about how today's wall-wart

Looking for some troubleshooting steps. I can measure V,A,R,C,L. No scope. 9V build, after build and testing, I had power output on all 4 bands. I put it in the case and lost 20M transmit, may not be

Finishing up my "Manual Days" QRP Chinese Antenna Tuner and decided better artwork just had to happen! I watched way too many YouTube videos on ways to label front panels. I discovered there is a "bra

Hello,. On my QCX+ the display is always showing the top layer of blocks on the screen. I know from the manual it states that there may be an issue with the microcontroller not communicating with the

Mike's Electronic Parts has a nice knob set including the screw and adapter for those little polyvariccon capacitors. Extension and Knob for Variable Capacitor - Mike's Electronic Parts (mikeselectron

Hi folks. I'm wondering a little about Power/SWR meters for QRP use. I have just tried a couple of meters on my setup using a QDX feeding a 20m EFHW strung up in the attic. The four meters I've tested

Hi Folks, is there anyone here who is thinking about adding a bluetooth interface for QDX? This could improve the portability of it. QDX could be deployed very close to the antenna with some battery a

I have a QCX-mini 20 meter cw transceiver that was built and calibrated by the factory and has been working great on both cw and WSPR Since the firmware was 1.07a, I decided to order the 1.09a chip an

Too keep is short, QDX Rev 3 with the 1.04 firmware is providing 5 volts to the ring of the PTT cable, but not triggering the QRP Labs’ 50w Amp. What should I be checking? more details: - QDX wired fo

Here are a couple of pics describing my homebrew AH-4 tuner controller. I use this controller with any rig capable of producing 3 watts or so of rf output. 72 / 73, Bill, N4QA

I'm seeing signals from 27 KHz below 14.074 MHZ... strong Morse code signals actually (when checked on another receiver). I understand why it's 27 KHz, and that image rejection depends on the balance

I tried my luck in that, hoping for some nice DX. After some painful QRP hours I remembered I had a transistor PA which i used to use in the 1980s with my FT7 and pulled it out. WAE does not have a QR

Hi All, Sorry for the late announcement, blame it on the heatwave, hi. Today is the monthly QCX WARC Party. See https://www.qrp-labs.com/qcxmini/qcxwarc.html for all information. Join the discord page

Hans, In your design of the BPF (L12), did you assume, or measure, stray circuit capacitance? My calculations, using a nominal AL of 4.9nH per turn squared, suggest that the capacitance values need to

Got my QDX kit on July 25 and got to find the artwork error on my own before the new build instructions were posted. It seems to be working OK except there is a weirdness. IC-9 likes to live around 2.

A quick post on my hotel op in Virginia. I used my $70 Surface 3 and my $95 Wonder-Wand. Brief QSO with a station in Ohio. Richard N6IJK

OK, so it's only one way, but it adds evidence that this little QDX - no bigger than a pack of cigarettes - has a good transmitter indeed ! Over the past 24 hours, I've made probably 50 or so 2-way co

Yesterday evening I finished building my QDX and was quite proud of myself, for it was the first 'real' soldering project in ~8 years. I already realized how old I have become when I needed a 20x micr

Hello Hans and all, I built the QRP Labs Si5351A VFO/Signal Generator QCU Ver. 4 for use in a Kenwood TS-520SE, for replacing the Kenwood VFO that lacks frequency stability. I have a single 60 meter L

Hey gang. Received my assembled QDX today...Thanks Mark ! OK, so the receiver is plenty hot...I'm playing on 40m first. When I attempt to transmit - either by the 'Tune' button or by actually calling