I've just run two tests of my WSPR/AX-1 set-up with and without a counterpoise. Each test ran 24 hours over the last couple of days. Here are the results:
COUNTERPOISE? YES NO ------- ------- Total Contacts 152 129 Maximum Distance (km) 15,720 17,276 Median Distance 2,137 1,823 Median SpotQ 446 398 Where SpotQ = Kilometers / [(2 Watts x (SNR in DB + 36))/36) ] The WSPR circuit's ground and SMA connectors are apparently providing enough of a counterpoise to propagate a respectable signal. Here's a close-up of the rig with no counterpoise: https://gruner.com/k4rhg/wspr_ax-1_nocounterpoise.png 73, Ron Gruner K4RHG ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com