Friday 26 June 2020

Australia on 2 Watts


Extremely happy - Running WSPR on a Raspberry Pi 4 driving an FT-817 with Yaesu  SCU-17 sound card interface, I have been heard in Australia! (Anyone else getting spurious decodes with a similar setup ?)


The  antenna is a MALDOL 40 metre band mobile whip mounted on a clothes dryer spike and a "Clansman" PRC counterpoise...


Although I reported 5 Watts (37 dBm) in the transmission, the AGC was backed off and I have since measured the output power with an RMS meter at just under 2 Watts.  I think it's time to build the QRP Labs Ultimate WSPR/QRSS kit or even a Raspberry Pi transmitter!

Thursday 4 June 2020

FT-8 using Clansman EVHF antenna on 17m


With the good conditions on HF, I tried using FT-8 on 17 metres using a Clansman EVHF sleeve dipole.  Despite several attempts to contact stations in the Caribbean, no contacts so far, some experimentation with the FT-817 and WSJT-X settings is required to get some RF out of the antenna...


The olive-green antenna is almost invisible as our neighbour had walked past it several times over the week and not noticed it!  The combination of the lockdown heatwave and guinea pigs hasn't been good to the lawn...