Hi all Has anybody tried powering a QDX with three 18650 LiFePO3 cells? The fully charged no-load voltage is about 12.15 VDC for three in series, and a partially charged voltage around 10V. I'm thinki

Hi all... Wanted to put out the question, to Hans and others, in case it's not already existing somewhere, of what one can do, or would want to do, to "bring forward" the earlier PCB versions? I have

I just finished building the QDX, my third or fourth qrp-labs kit. Receive is working perfectly. The led pulses on transmit and I can hear the tones on another receiver. However I don’t see the slight

I am building my QDX (Board 3A) right now. I am curious about toroid winding. Has anyone experienced trouble if one's toroid is "untidy", i.e. one or two loops are not tight to the ferrite? I assume t

Hello I am new to the u4b board, and I have started to setup my u4b. I have antennas soldered on and I made my tracking page. However when I go to the tracking page, there is no output from the TRACKE

I have a Light APRS+WSPR tracker intended to be used on a pico balloon that will float higher than 12,000m. I am curious about this variable in the source code: ublox_high_alt_mode_enabled = false (wh

Have I missed it ? I havnt seen a QRP Labs NewsLetter since Aug 2021.

My QDX with Rasp 4 and WSJT-X is now running (see problem in #99825). The lack of QDX response was due to unconfigured firmware. I had initially used firmware1.6 sent with the QDX kit and the built QD

Hallo zusammen, Leider wird mein QDX-Transceiver zur Zeit nicht von Windows 11 und Windows 10 erkannt, obwohl dies früher funktionierte. Ich gehe mal davon aus, dass es wohl im Gerät irgendwas gehimme

A receiver with a Tayloe detector seems to be a good way to listen to HW. For SSB I need polyphase network, that much I know. Polyphase network is critical. But there are versions 4 inputs and others

I there anyone who can repair a QDX? I have blown Q7 and possibly something else. Is there anyone who can repair this for me? I would be happy to pay for the repair.

I would like to send and receive messages.

Greetings y'all, Just received my QDX-M this morning. Wow ordered it on March 13th. Anyway, I ordered it as a 10 m unit, but my intention was to put it on 20 running FST4W. I assumed I could use the f

…I totally forgotten how to enter and save messages into my QCX-Minis. Please don’t suggest I “red the manual” because I have it open in front of me — and still can’t figure it out. I did it successfu

Hello Hans, I purchased a lightaprs-w-1.0 from your store before you had the u4b available. I'm having trouble compiling the code and don't see any configuration program available. The problem seems t

Hi, Does anyone know a good source for a QRP Power Meter, before I pull the trigger on a used WM2? My existing is HB and works fine but I saw a passing reference to a tiny one one with an OLED Display

On our first and only launch so far we got the above named error from the APRS network, apparently due to using digipeating at altitude. Looking at the following code from github: /** Airborne station

I've been away from the hobby for a while and I just recently got my QCX-40 out of storage. I had it set to practice mode, attached it to a dummy load and began practice CW using a cwmorse camelback s

Hi all well I had my QDX up and running with WSPR on 20M-10M for just over a week and then on Sunday night with no warning whatsoever a dry lightning strike happened about 600M away (if there was any

I just watched the 2018 YOTA QSX interview on YouTube and got really excited about this rig. I read about it on the website but hearing about it right from the inventor/designer was even more interest