[Scan-DC] P25 traffic on 165.6875

Sat, 25 Jan 2003 09:30:10 -0500

Well you learn something everyday.  Having been at Treasury I knew they had
ASTRO units, but the information I had was that they were going to stay
analog until the entire Service could switch over.
----- Original Message -----
From: "Gary Davis" <[email protected]>
To: <[email protected]>
Sent: Friday, January 24, 2003 10:48 PM
Subject: Re: [Scan-DC] P25 traffic on 165.6875


> They are transmitting in P25 mode.  I first "discovered" this when my 780
stopped on freq and I recognized the sounds as being the same as heard on
Fairfax's system.  I punched the freq into the 250d and started hearing
voice.  The display was/is flashing between FM and P25.  Other USSS freqs
that I have are DES, but not this one.
> The base (Washington) has a very bad echo on their end.
>
>     Gary
>
> --- "John M Nash" <[email protected]> wrote:
> >Gary:
> >
> >Were they transmitting in digital or analog mode?  Normally, USSS is
analog
> >using DES encryption.  I bet what you heard was analog "in the clear". I
> >would be surprised if that was a digital transmission.  To my knowledge,
FPS
> >is the only agency using digital communications.  Everyone else is still
> >analog/DES.
> >
> >I would be happy to hear that I'm mistaken.  Can anyone confirm what Gary
> >heard?
> >
> >Regards,
> >
> >John Nash
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