Much has been written about number stations over the years, although little is known for fact. We do know they often broadcast on a schedule, so with a little planning, it is quite easy to receive them for yourself. Online SDR receivers take this to a new level, and now with TDoA, we are able […]
Using the KIWI for TDoA (Time Difference of Arrival)
Pirate radio stations around 6MHz have been using that part of the spectrum for many years. They often populate that part of the band, and in the main don’t seem to cause the primary users any issues. The primary users sometimes put a STANAG signal on top of the pirate music station, I doubt they […]
Suffolk Red Field Weekend
Suffolk Red hosted a field weekend from their field day site at the Suffolk Aviation Heritage site near Ipswich. The weather was set fine, with temperatures close to 30C and with the option to camp out for the weekend. George M1GEO, Chris G8OCV and I set up the operating tent and populated it with the following […]
Solar Powered WSPR Transmitter
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 […]
70 MHz Cumulatives
Using the club call M0SNB June saw another chance to operate 70 MHz outdoors in the RSGB contest, with perfect weather at 24c. The contest site at the Secret Nuclear Bunker was used, at some 110m ASL it has good take off in most directions. Using the homebrew 6e 70 Mhz beam, and the solid-state […]
Resonant antenna tests on WSPR 472 KHz
At the SNBCG operating site we have the opportunity to out up some large antenna, and for some time we had wanted to try 472 KHz using George M1GEO WSPR transmitter. The plan was using the onsite 50m cellphone mast* to pull up some wire, and with some work hopefully, enough wire to have a […]