[FedCom] 418.75 Active Recently

[Tom Greenwood]

Curious!  Why not just a CW signal?  Possible simulcast testing from
multiple sites?  Possible testing with live radios that monitor and decode
the data but can't set up on it?

Very interesting.

73's

Tom, N1JQB
Metro West Boston

-----Original Message-----
From: fedcom-bounces at mailman.qth.net
[mailto:fedcom-bounces at mailman.qth.net]On Behalf Of Chris Parris
Sent: Wednesday, June 06, 2007 23:19
To: Discussion of Federal Government Communications
Subject: Re: [FedCom] 418.75 Active Recently


Might not have been a trunking control channel. There apparently is a
digital test signal that they can transmit for automated coverage testing
that sounds like a P-25 control channel, but does not indicate as one on a
P-25 scanner. I heard that a lot when they were setting up the VHF IWN
system in Washington and Oregon. We heard it for days at a time on some of
the voice channels.

- Chris
 --
Chris Parris
Fed Files Columnist
Monitoring Times Magazine
chrisparris at monitoringtimes.com
Fed Files Blog - http://mt-fedfiles.blogspot.com/

----- Original Message -----
From: <kennyblues at aol.com>
To: <fedcom at mailman.qth.net>
Sent: Wednesday, June 06, 2007 5:44 PM
Subject: Re: [FedCom] 418.75 Active Recently


> And to add some confusion to this, this afternoon at approximately
> 16:00, here in the Boston area DEA channel 1 418.6250 started
> broadcasting a trunking control channel as well as Channel 10 418.8750
> (Weak signal at my location). other channels with a P-25 encrypted
> signal this afternoon and evening are 414.4750. 418.9000 and 419.4250.
> Very strange, further monitoring in the coming days is warranted. Is
> this the start of a DEA trunking system? Is it just something screwy
> going on.
> I'd say that prior to this 90% of al DEA radio traffic in this area has
> been P-25 encrypted.
>
> Kenny
> Rockland, MA
>
>
> Subject: Re: [FedCom] 418.75 Active Recently
>
> That would be the DEA, of course, on their Channel 3, which is normally
> conventional simplex. I've never run in to a repeater on DEA Channel 3
> or 4
> (418.675 MHz), but have run in to remote base station transmitters on
> these
> frequencies in rural areas.
>
> Some DEA offices have started using P-25 on all their frequencies, but
> many
> areas continue to be analog.
>
> - Chris
>
> --
> Chris Parris
> Fed Files Columnist
> Monitoring Times Magazine
> chrisparris at monitoringtimes.com
> Fed Files Blog - http://mt-fedfiles.blogspot.com/
>
> ----- Original Message -----
> From: "Ken" <rfinder1 at verizon.net>
> To: "Discussion of Federal Government Communications"
> <fedcom at mailman.qth.net>
> Sent: Wednesday, June 06, 2007 1:46 PM
> Subject: [FedCom] 418.75 Active Recently
>
>
> > While mobile on the MA Turnpike Interstate 90, near Springfield this
> > frequency was active. Was encrypted, unclear whether P25 or analog
> type.
> > Appeared to be simplex rather than a repeater.
> >
> > Ken
> > Springfield MA Monitoring Area
> >
> >
> >
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> > FedCom at mailman.qth.net
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