[Lowfer] Odd 137 kHz Propagation

[Ed Phillips]

Hello Warren,

Nice grab. Could be doppler, but not the clean doppler from an airplane. 
Needs to be much bigger reflector

How about the doppler off of the shuttle's contrail (rocket exhaust) ?

Has mushiness like aurora doppler. And peaky, it came and passed.

Stan, W1LE    FN41sr   Cape Cod"

    I can't copy any sky wave on LF so haven't seen that effect but it's 
pretty common on 13.555 MHz, or at least it was back when "the band was 
open" more of the time.  I assume that is more or less similar to the 
propagation condition when AM SW signals "sound hollow".

Ed