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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

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

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

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

I built a 30 meter QRP labs amp to use with my QDX. I have it hooked to a power supply at 15 volts and everything seems to be working fine. To get it to work I had to go into the firmware and enable t

It looks like section 4.3 of the 1.16 and 1.18 construction manuals have not yet been updated to provide the expected power output vs supply voltage for the high band version of the QDX. I'm seeing (3

Si5351A synthesizer I have both an Si5351A with TCXO one with the 27.000 MHZ crystal, both are mounted in the same type QRP-LABS case, both have the same highly regulated power supply. A ham person wa

I would like an easy program to makes PCB's from my small projects that I ugly construct. Then maybe order a few on the web. Any ideas? I usedI used to draw on copper boards and etch but that was year

Hi All, Does anyone know how often the QRP Labs Balloon tracking page is updated with fresh data? I'm testing U4B "AE0IH_T1" currently in the back yard under solar power. WSPR.net shows propagation, b

I built my first of two QDX Rev.3 transcievers. The toroid winding wasn't that bad after building a QCX a while back and then a (tr)uSDX recently. I was able to make a JS8 QSO between Utah and Idaho w

Hi all 1_09 has several bug fixes and is now available on the QDX page http://qrp-labs.com/qdx and the direct link is http://qrp-labs.com/images/qdx/firmware/1_09.zip Remember QDX firmware is the same

Finished QDX V3 yesterday. It's 9V unit and the sixth I have built-all others have worked just fine, but this one is DOA. Upon power up it just goes to boot and shows no firmware along with the LED on

I thought I knew what I was doing, but after 2 days of test a U4b in the back yard, it's obvious I don't! I am getting good reports on wsprnet.org, but no luck on QRP-LABS.com/tracking page... The U4b

Hello all, Can anyone point me to any articles or guidelines on integrating a device like ProgRock2 into older gear? I'd like to use them in a couple of Kenwood receivers, R-1000 and R-5000. I think t

When arrived, I just tested the serial connection to set the frequency, didn't even check output. Took onboard a ship in a box (in the original shipped enclosure by QRPLabs). Even before connecting to

Well this is embarrassing! I soldered the dummy load project and ended up with 0 ohms across the connector. Any ideas on what went wrong here or for ideas to salvage the project without desoldering al

A new chat has been created: My apologies if this is a duplicate message. Curious to know if anyone could provide some advice. I've completed my amp and have moved on to sections 7.3 and 7.4 in the ma

Hi all, I have configured my QDX-M as QDX-HB (only jumper T1 to GND), added 2 turns to the L12 and testing it as dual band 10m / 12m RIG. In the attached PDF you can see the RF sweep at 12m. So far so