As wspr activity has incresed by 100 % there are now 4
stations active on wspr...!
a quick re-org has adopted 502.4 KHz usb dial at the
center of activity
giving 503.9 KHz =/- 100 Hz ie the very top area of the
band.
The frequency is now in use and looks to be effective
Graham
G0NBD
IO83LK