military

Interesting digital sounding voice comms monitored last night on 4739 kHz in USB. Apparently this was a crosspatch being utilized by the US Navy TOC in Jacksonville, FL, allowing transmissions from a UHF net to be heard by their players on HF. I am told this was a DAMA voice channel and the robotic sounding comms are 2.4kbps ANDVT.

Bloodhound 300, Bloodhound 701, 401 and 442 wkg Surveillance on 8000 kHz USB this past Monday (2/21) coordinating vessel movements within a hazard area for a missile test off the coast of Southern California. The Arrow 2 missile defense system test is a joint exercise between the United States and Israel that intercepted and destroyed a simulated Iranian ballistic missile threat.

Around sunset the stations switched over to frequency 2781.5 kHz USB for the remainder of the exercise. It was definitely an exciting event to monitor!

Here is a recording of radio traffic monitored on 8000 kHz USB. In the clip you will hear aircraft passing details about several vessels, and trying to deal with a stubborn captain refusing to alter his course!

Token from the RadioReference forums reported an air intercept exercise on 11190 kHz USB. I tuned the radio and sure enough there it was. I was not able to hear all parties, but had a good signal from a unit identifying as Tango. He was in comms w/ Romeo Whiskey. Other folks around the western USA also reported hearing this net.

Here is a brief intercept of some traffic monitored.

For anyone listening to the HFGCS frequencies yesterday, they probably noticed the increased amount of EAM’s (Emergency Action Messages) and other traffic. These comms were related to the U.S. Strategic Command nuclear command & control exercise called Global Thunder. To learn more about this exercise, read Hooligan’s informative post on the RadioReference forums.

For those that missed it, here is a recording of the EAM activity.