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