[FedCom] Philly activity

[Terry Pavlick]

Based on recent monitoring activity for ATF .... they are using both 
165.2875 and 166.5375 as simplex surveillance frequencies in P25 clear and 
encrypted.  There normal admin activity is as you describe with 166 in and 
165 out.  No aircraft is involved in the surveillance as all units monitored 
are either at the base or mobile.

At least this is what I am hearing from my location recently.

Terry

Wallingford PA



----- Original Message ----- 
From: "News1" <news1 at airmail.net>
To: "'Discussion of Federal Government Communications'" 
<fedcom at mailman.qth.net>
Sent: Sunday, June 12, 2005 6:31 PM
Subject: RE: [FedCom] Philly activity


>
>
> -----Original Message-----
> From: fedcom-bounces at mailman.qth.net 
> [mailto:fedcom-bounces at mailman.qth.net]
> On Behalf Of Terry Pavlick
> Sent: Sunday, June 12, 2005 2:20 PM
> To: Discussion of Federal Government Communications
> Subject: Re: [FedCom] Philly activity
>
> Ben:
>
>> 163.7875 has occassional P25 clear or encrypted traffic.  Someone gave
>> this to
>> me as an FBI frequency.  It appears to be a repeater output.  Most of the
>> clear
>> traffic I've heard sounds like it is coming from NJ somewhere (I am in SE
>> PA,
>> NW of Philadelphia).
>
> I am leaning more to 163.7875 being part of Homeland Security (whether
> Customs, INS or other) as when this frequency is active several other 
> "old"
> INS frequencies are keyed at the same time.
>
> Also, for the last few weeks, BATF (presumed) has had surveillance on
> 166.5375.
>> The base is P25 clear.  I cannot copy the field units (I'm assuming the
>> operation is working in simplex).  Very rarely, I will copy P25 encrypted
>> traffic on 165.2875 (repeater out).
>
> Yes ATF - 166.5375 is Net 9  simplex
>
> Yes ATF 165.2875 is active lately with simplex comms (surveillance) in P25
> both encrypted and clear...just depends on whether they flick the switch.
>
>
>
> In the Dallas area Net 9 is a repeater using 166.5375 (which is the common
> input) to 165.2875. The "Net" refers to different network ID's usually 
> with
> the same frequencies. This is true for USSS in this area as well. This
> allows the user to select different repeaters in the same area. ATF does
> have simplex capabilities on 166.5375 which is labeled Tac A2 in this 
> area.
> Since you say you don't hear much on the RPT output is it possible they 
> are
> using a repeater out of your listening range but you're close enough to 
> the
> office to hear the base? Are you sure you're not hearing an aircraft? Just
> some thoughts...
>
> Terry
>
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