FBI Frequencies Searching in PA!!! Re: [FedCom] 167.490

[Bill]

A lot of history goes back into researching how each region handles the 
Repeaters.
I can say way back, in New England, we thought the Repeaters were patched
together, since at time we would hear 3-6 different Repeaters all key up at 
the same time.

A little Research and Scan-Search provided us with the information that they 
Cluster the
repeaters and use a Common input.   Yes...One input [same pl] but each site 
was a
different output.  If the Radio was a mobile, it would trip all the 
repeaters, if they used a
Portable, maybe one or two at a time.

"Central" atleast in New England = 800, the Boston Office.

Many RA's participate in a 9am Roll Call with Central.

also , every 7-10 years, the Repeaters and Radio sites get moved.
Both physically and Frequency wise.



----- Original Message ----- 
From: "Terry Pavlick" <terry_pavlick at hotmail.com>
To: "'Discussion of Federal Government Communications'" 
<fedcom at mailman.qth.net>
Sent: Tuesday, March 28, 2006 5:09 PM
Subject: RE: FBI Frequencies Searching in PA!!! Re: [FedCom] 167.490


> Freq 168.425 and 168.725 (both using pl 167.9 when in the clear) are wide
> area repeaters for the entire E PA, DE and NJ and Philadelphia area.  It
> appears that at times both are keyed up simultaneously and at other times
> not.  It just depends on how the system is activated.   168.725 appears to
> be more local to me (in Delaware County based on signal strength.
>
> More active frequencies now are 173.9125 and 173.9375 (which based on the
> level of activity) may be the newer set of repeaters.  PL is still 167.9 
> on
> both freqs.
>
> I was always under the impression that "Central" was Philadelphia as there
> were various other designators used in the past to identify the other
> locations listed, i.e. "West" for Newtown Square etc.
>
> Based on recent monitoring, they appear to be switching over to P25 as 
> some
> testing has been heard recently from my location.
>
> There is sufficient activity in the Philadelphia area (even for mobile
> monitoring) to keep the scanners busy.   Agreed that a lot of it is P25
> encrypted.   My best suggestion for searching in the Philadelphia (Eastern
> PA, Delaware and Southern New Jersey (even in the mobile) would be to 
> search
> from 163.5 to 173.9875 using a P25 capable scanner.  The P25 scanner is a
> must.   UHF activity, while there, is limited.
>
> Hope this helps.
>
> Terry
> Wallingford PA