US Military Station-to-Station Shortwave Radio Communication

This video is a companion piece to the videos in the #INTERNETFREQUENCYSQUAD video series, which is a daily compilation of US Emergency Action Messages (EAMs) broadcast on shortwave radio frequencies 4724 kHz, 8992 kHz, 11175 kHz, and 15016 kHz that I record from various WebSDRs and/or KiwiSDRs and upload onto the internet.

Aside from EAMs, there are some other types of messages that are broadcast fairly regularly that I don't typically include in the daily videos;
(1) Test counts. I omit these because they're not necessarily informative in any way.
(2) "STANDING BY FOR TRAFFIC". May be informative of station status in some way, but I'm typically unable to turn on the recorder in time to grab these brief messages.
(3) Any "station to station communications"; be it authorizations or other communications. I don't usually omit these deliberately so much as I have a hard time hearing them with the SDRs I usually use, but after some searching have found a few SDRs that reliably pick them up.

This video does nothing to ameliorate the omission of test counts or standbys, but it contains a few of the "station to stations*". One of the reasons I was interested in recording these transmissions was to find out more about the authentication codes used to enter and exit (or "check out of") the High Frequency Global Communications System (HFGCS). After a day of successful monitoring and some conversation with folks in the know after the fact, I'm doubtful the codes are of much interest and don't know going to continue to monitor them. If you watch this video – let me know what you think.

SECTIONS:
00:19 MAIN 88 Traffic Request
03:30 PAWN SHOP entering the HFGCS
03:55 REINVEST entering the HFGCS
08:00 INJECTOR entering the HFGCS
10:36 INJECTOR exiting the HFGCS

* This is a phrase I've made up myself. Refer to comments for more info.

#INTERNETFREQUENCYSQUAD #OSINT #shortwaveradio #USAF #HFGCS