[FedCom] ProVoice on Fed Channels?

[gary]

Groom Lake (Area 51) uses what I believe is ProVoice. I'd have to dig up 
the audio if you want to hear a MP3 of it. However someone I trust said 
it sounds like ProVoice.

I have most of their systems decoded in correct LCN. Looking at my 
spreadsheet, I'm missing 5 frequencies out of a total of 37. It's a 
pretty complicated system using 9 sites, two of them off of the Nellis 
range.

Etrunk will follow a ProVoice system, so it appears the only difference 
is in the audio.

Chris Parris wrote:
> Got a question for the list...
> 
> Has anyone run into a federal conventional frequency that sounds like it
> might be using ProVoice digital mode rather than APCO-25? 
> 
> I ask because I have run in to a couple of UHF federal frequencies that are
> using some sort of digital mode that the APCO-25 scanners do not attempt to
> decode. I wasn't sure what it might be, but recently I was able to listen
> to some transmissions on an EDACS ProVoice trunked system and the sound of
> the ProVoice transmissions seemed exactly like the "un-decodable" federal
> UHF traffic...
> 
> - Chris
> 
>  --
> Chris Parris
> Fed Files Columnist
> Monitoring Times Magazine
> chrisparris at monitoringtimes.com
> http://www.monitoringtimes.com
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