5835khz AM(July 15, 1621UTC, 10871.70khz USB (July 12 249UTC) & 10871.90KHZ USB(2052UTC). Russian Channel Marker. I'm not really sure where in Russia these come from or what their purpose is, as i am not very "up" on the utility type broadcasts on HF. The 5835khz beeping is pretty clear and evident, but it sounds like there's a little interference coming from somewhere or someone else. The signal from the 10871khz signals is pretty weak but the beeps do make it above the fading/noise, 5835khz audio here:
https://www.youtube.com/watch?v=DEZMo5DziCI. 10871.70khz usb audio here:
https://www.youtube.com/watch?v=kIhn7MIHMR4 and 10871.90khz USB audio here:
https://www.youtube.com/watch?v=xQ9BeqosLtc73's.
Paul Walker
Galena, Alaska USA
Tecsun PL880, 225 foot longwire and EmTech ZM2 Tuner