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 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

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 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

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

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

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 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

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 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

It appears that you should enter your callsign in capital letters in the U4B balloon tracking page setup. In the attachment below you will see that the red marks around callsigns (in lower case ) did

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

[image.png] That's it, other than the 40M Hamstick on the rear bumper and a qrp tuner, which could be replaced with a cheap manual tuner. That's an On The Go (OTG) cable on the cell phone. Swapped mes

I built my Ver. 3a QDX + High Band Kit to include 8m this week. It was just the 'usual' build, except i dropped the lowest of the LPFs and the section of L12, and shifted the top and middle LPF to be

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

Just joined the reflector. Ordered a high band QDX as a means to get me on the digital modes - not sure how for how long, a CW QRPer for many years with my K2. Not sure when it will be arriving, shoul