W2BY's blog

I have recently linked my Flex 5000A with WSPR 2.0, after configuring the virtual cables correctly the CAT control has allowed me to both receive and transmit with the Flex. It wasn't obvious at the beginning that my Flex was going to want to be controlled by WSPR 2.0. Once everything was working together I decided to compare the performance of my antennas on 30M, the key is finding someone who is listening and transmiting long enough to run the comparison. The three antennas that I wanted to compare are: 80M Full Wave Delta loop up 45ft running north/south, G5RV up 45ft running north/south and ZeroFive Vertical. Each antenna is fed with LMR-400 with a 1:1 choke balun at the entry point into the shack.

EA1DZM was kind enough to listen long enough for me to evalutate all three antennas, unfortunately EA1DZM was not transmitting so I wasn't able to compare the antennas in both transmit and receive over the same progation path.

The Flex 5000A was set to transmit 1W (30db) at 10.140090 MHz:

19:52z 5697Km EA1DZM Loop -13db +/-0.5db
20:16z 5697Km EA1DZM G5RV -14db +/-0.5db
20:28z 5697Km EA1DZM ZeroFive -20db +/-0.5db