[Elecraft] OT Mystery QRM Help (Video)
David Ahrendts
davidahrendts at me.com
Fri Jan 22 21:16:36 EST 2016
Stumped. Need your guesses. What is this mystery, rhythmically pulsing, urban S7 QRM: https://vimeo.com/152779708 <https://vimeo.com/152779708>
Factors: captured 5:30pm Friday (Sunset was 5:15). Densely packed Los Angeles neighborhood — could be next door or a block away. Occurs regularly at night or near dusk and not prime 20M day time. Occurs only on 20M. I’ve noticed it from Fall on to current Winter time. Seems to be a mechanical device (pool pump?). 60-degrees falling to 50-degrees tonight -- a heater system? Eventually just fizzles away slowly. Elecraft K3S + P3, SteppIR DB-11.
David A., KK6DA (formerly KC0XT), LA
David Ahrendts davidahrendts at me.com
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