On 03/09/2023 16:43, Jerry Moyer via groups.io wrote:
I have never associated Doppler shift with an RF path between 2 FIXED objects
Jerry,
The ionosphere moves. There is a small Doppler shift of sky wave signals, often less than 1Hz. But it can be very large in auroral conditions.
The stations do not move but the refracting area does.
73 Alan G4ZFQ
