Didn't the discussion also cover whether the hum increases in
intensity as Chongjin fades down, and decreases as it dominates the
frequency? I believe that increasing hum with increasing Chongjin
signal strength would indicate that the hum is part of Chongjin's
signal, rather than due to
Or could the hum be just heterodyne caused by 50 Hz difference between
Chongjin tx and Heilongjiang? I checked via a Japanese receiver and I
don't see strong side carriers, which would be typical for mains hum
otherwise.
Mauno
Gary DeBock kirjoitti 6.11.2018 klo 9:25:
A few months back
A few months back there was a discussion on the list about the transmitted
audio from the 621-Pyongyang BS/ Voice of Korea station in Chongjin, N. Korea--
specifically, whether there was audio hum on the frequency from a bad
transmitter, or whether the bad audio was caused by a drifting
