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UVB76 "The Buzzer" But NOT on 4625!

After 4 years in Alaska, 1 1/2 in Galena and currently nearly 2 1/2 in McGrath, I finally logged UVB76 "The Buzzer" but not on 4625khz and no one in the DX/hobby community I spoke to knew of or heard of The buzzer anywhere else...

However , Jan 29th I logged "The Buzzer" on 9705khz! At 2125UTC, I tuned across the dial and had a decent signal from Vatican Radio in Portuguese, but there was this "noise" under it I didn't initially recognize.

It took me a minute to make out that it wasnt any digital data, weather Fax, etc and when I pulled up someones youtube stream, what I had on 9705 was a perfect match to 4625. After 3 minutes and 10 seconds, the Vatican program signs off and The Buzzer is in the clear.

Here's the audio:

https://drive.google.com/file/d/1_aVyos_ILeNYHX9s2mkVxf5VJASaUQEa/view?usp=share_link
 
I have to wonder if this isn’t some sort of IF image involving harmonic frequencies. Note that 2 x 4625 is 9250, which interestingly is 455 kHz below 9705.
 
I have to wonder if this isn’t some sort of IF image involving harmonic frequencies. Note that 2 x 4625 is 9250, which interestingly is 455 kHz below 9705.
I've NEVER heard the buzzer on 4625, not even a whisper.. im not near any AM or HF transmitters... so while plausible, very doubtful in this case, especially since I logged another Russian pirate a few days later in the 9mhz band.
 
I've NEVER heard the buzzer on 4625, not even a whisper.. im not near any AM or HF transmitters... so while plausible, very doubtful in this case, especially since I logged another Russian pirate a few days later in the 9mhz band.
Perhaps a harmonic from the station's transmitter itself? Which would propagate better on 9705.

I mean, the transmitting equipment is probably getting along in age, and who knows how well some of it is maintained.
 
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