[FedCom] ProVoice on Fed Channels?

[gary]

The only problem with your analysis is I suspect the guy who said that 
system is pro-voice got that information from me. Thus you really only 
have one source, namely the guy who told me it was provoice. [I hadn't 
planned on publishing any of these frequencies, but when I saw about a 
third of what I had logged on the net, I posted the rest since I figured 
the other person would get the information eventually.] There may be a 
few bugs in that page. It is the first time I've seen it. For instance, 
there is no system 9, at least it doesn't come up as system 9 on etrunk. 
I've run the etrunk from near Mercury so I know this is the case. I 
think system 7 is relayed to Vegas, though I can't rule out that it 
comes from Angels Peak as I never DFd it. However, if it were on Angels 
Peak, I would hear it in more places than my logs indicate, and it 
sounds really strong at the base.

That's the problem with radio reference. It can be useful, but you have 
different people submitting data, so the information is a combination of 
correct stuff and who knows what. In my case, every frequency I logged 
has been verified because it popped up as a control channel. Groom Lake 
rotates all the frequencies as CC, so given enough visits, you will get 
them all.

The trouble with ProVoice (if that is what is used at Groom) is it does 
sound a bit like the DES encryption used by the FBI. The preamble is a 
bit different, but eventually it sounds like white noise once you are 
into the meat of the transmission.




Chris Parris wrote:
> 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.
> <<<
> 
> Right, that's the system I was listening to when I realized that what I was
> hearing sounded a lot like some traffic I have heard in the past in a
> couple of other cities.
> 
> According to RR it is ProVoice...
> 
> http://www.radioreference.com/modules.php?name=TRSDB&sid=1537
> 
> I know there are ProVoice trunked systems, some federal. But I'm still
> interested in the non-trunked (conventional) use of ProVoice on federal
> frequencies...
> 
> - Chris
>  --
> Chris Parris
> Fed Files Columnist
> Monitoring Times Magazine
> chrisparris at monitoringtimes.com
> http://www.monitoringtimes.com
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