US Navy AN/TPS-71 Relocatable Over The Horizon Radar (ROTHR) seen again below the 11 MHz band space for the second night. Captured via an East Coast USA SDR. #Radio #hamradio #USNavy @nyprepper1

🔗 SoILRadioOperator (@SoIL_Ops)

📲 @twittervid_bot

Happening now on HF-GCS primary frequencies:
Steady broadcast of standard/ 30 character EAMs from c/s DARTGUN. "More to follow" is announced after each message when a new message is transmitted in rapid succession to another station prefix. #HFGCS #OSINT #USNavy #USAF #hamradio #Venezuela #Russia #Kremlin #Military #MilitaryNews

🔗 SoILRadioOperator (@SoIL_Ops)

📲 @twittervid_bot

Signal currently present:
US/ NATO data mode STANAG 4481 (aka NATO-75) is currently broadcasting on HF-GCS secondary channel 4724 kHz over the CONUS. A commonly used digital mode, but not too often seen on primary or secondary channels, it's more common to tertiary mil frequencies throughout the HF spectrum. One of the dedicated uses of this mode is for minimum tech requirement for shore to ship broadcast systems. #hamradio #intelligence #Military #UnitedStates #NATO

🔗 SoILRadioOperator (@SoIL_Ops)

📲 @twittervid_bot