I've been monitoring 380.075 mhz (Ft Ritchie Site E) for some time in the Tysons Corner area and have attached 2 transmissions. One is during the day and continuous (possibly a control channel), the other a sample of a occasional voice transmission during the night. Can anyone direct me on what mode this is and possibly other information? DSD turns up nothing.
Link:
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That file sharing method didn't work, so it's hard to understand what you're talking about. Based on your location & reference to "Site-E," I assume you're talking about Tyson's Corner, but any web page or whatever that refers to that site as being operated/managed by Ft Ritchie is way outdated & thus untrustworthy. I haven't been to that site or the others (over the years, I've been to Sites A, B, C, D, E, R & whatever that one was at Ft Meade) since the 1990s, but I believe it's now technically an annex of Ft Myer & don't know if they even still officially call it Site-E, since some of the other Sites are gone, & it was always poor OPSEC to name them that way.
Anyway, the tower has LMR stuff for some regional DOD nets as well as some other government agency regional & location-specific nets, voice & data. For example, the WH Comms Agency has some repeaters/remote bases there for some of their land mobile radio channels -- at least in the past, if CROWN wanted to radio-check HORSEPOWER on the Oscar channel, they normally did so via the Tyson's site.
You say you've heard some occasional voice traffic, but wonder what mode. If you're not sure what the mode is, how do you know it's voice traffic?
It'd be nice & simple if all the voice stuff was just P-25 clear or AES-encrypted, but I guess some of the various users also have ProVoice circuits.
