OK its controversial, but I need to ask the question what does it actually tell you about your ability to make a QSO. I would argue not a lot, sure its a fantastic tool for telling you how antenna A compares to Antenna B or what are the best times to work country x. In […]
A while ago I completed the QRP labs WSPR transmitter, you can read about that project in this article. I wondered how easy it would be to set this up in the garden, solar and battery powered. The QRP labs unit transmits around 200mW, and the idea was to have this running 24×7 transmitting around […]
Following on from the previous post, WSPR reception continues mostly 24×7 with a focus on MF. As previously described the setup has been operating for a couple of weeks now, and its a good time to review the WSPR spots. Best DX Spotted 472 KHz Call Grid Pwr km az WA4SZE EM65 0.2 6826 45 […]
WSPR reception 24×7 has always been something I have wanted to try. The problem is trying to find a transceiver, computer, antenna combination that will allow this with minimum fuss. 472 KHz Reception Computer You won’t need a very high spec computer, but if you are leaving it on 24×7 low noise and power […]
Welcome to Part 2, the project started in Part 1 and this covered the initial build and setup of the Ultimate 3S. Changes to the TXM are possible but require you to manually change the LPF and input a new frequency via the software. QRP labs have developed a relay switched LPF kit, and Part 2 covers the […]
Welcome to Part 1, this covers the initial build of the U3S, Part 2 covers the addition of the LPF relay board. Some month ago I purchased a Ultimate 3S QRP transmitter from QRP Labs. The latest version is the ultimate 3S and it comes with a number of options. Over the christmas holidays I decided […]