@VE2UWY @va3db @zazzoo I haven’t listened to a repeater like that but now I will try it. I’m no expert in meteor scatter but AFAIK the Doppler shift is within the pass band overall - there is spread, possibly similar to aurora. Btw I don’t know if people realize there is measurable Doppler on HF skip, especially during solar events, when the ionospheric layers change in height.