[SW] 15610 kHz - Adventist World Radio, Dushanbe - with 80Hz sidebands, Aug 17 2024

Dushanbe, Tajikistan relay site became popular among major shortwave broadcasters who seek to cut costs. After closing Tinian and Saipan, Radio Free Asia became reliant on this site for their broadcasts to North Korea. But transmitters in use there ain't young, and some defects can be noted on air.
This is AWR, Adventist World Radio, in Mongolian, beaming out of Dushanbe on 15610 kHz, heard at 12:15 UTC August 17th, 2024. I start the video right with a zoom on its carrier, which reveals additional, spurious carriers 80 Hz either side of the nominal carrier. These carriers are also modulated, and cause audio to be raspy, even when listening in SSB. Some synchronuous AM detectors also struggle, with one at Twente WebSDR failing completely. But in all cases, plain AM demodulation was OK.
Yes, I first noted this on Twente, and then hooked up my own SDR to capture what was happening. Hence the drift in the beginning of the video. But it stabilized soon.
Received in NE Poland using SDRPlay RSP1 and a 5-el LFA Yagi in Vertical polarisation, made for FM band, not SW!

[@oz_dx]

The language is Mon not Mongolian.

[@ArnieDXer]

?!

[@oz_dx]

@@ArnieDXer Mon language for Myanmar.

[@ArnieDXer]

@@oz_dx interesting, Aoki had it as Mongolian 😮