[Elecraft] AX-1 -- with and without counterpoise

[Ron Gruner]

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