Over The Horizon Radar Activity outside the 40 meter amateur radio band. See the other video with this activity outside the 20 meter band.
This one is very similar sounding to the previously posted one on 13 Mhz.
Hearing these around the HF Band. See the other video of one discovered in the 11 meter band.
LINK 11 SIGNAL
Link-11 (Also known as ALLIGATOR, STANAG 5511, TADIL-A, MIL-STD-6011, and MIL-STD-188-203-1A) is a Tactical Data Link standard (formerly known as Tactical Digital Information Link (TADIL) used by NATO and the US Military for Maritime Tactical Data Exchange.
Pirate Radio Station Radio Free East Coast with ID
Automated Weather Observations from Canada via Trenton Military 6754 Khz.
United States Coast Guard with Tropical Weather Outlook (NMN)