[Scan-DC] Police Interoperability

John Bacon scan-dc at djbitz.com
Sat May 21 08:30:19 EDT 2005


Well Massachusetts AirWing uses the 800Trunk system here. They also have a
small smart zone system in there if I am correct to help in dead areas when
they need it. 

But on interop here due to some people in politics thinking that MSP is
going to loose out on there 700mhz system for interop.

I would actually would like to hear any rumors people have about the Mass
Trunk System.

One rumor that I have herd is one zone in the system went down during a
training and even FAILSOFT wouldn't work, and now the towns want to get off
the 800 system.

-----Original Message-----
From: JoeBradley [mailto:JoeBradley at nextel.blackberry.net] 
Sent: Thursday, May 19, 2005 4:23 PM
To: ka3jjz at netscape.com; scan-dc at mailman.qth.net
Subject: Re: [Scan-DC] Police Interoperability

One of the bottom lines here for msp is that the majority of their ops are
either on low band or vhf w/ the exception of some of the rockville units (n
barrack) which operate on part of montgomery counties 800 astro trunked
system. Initially when Mont Co switched over there seemed to be some fcc
laws in place that prohibited the helo's from transmitting on the 800
channels due to air travel. Then there was the case that their wulfsburg or
even newer mutli band radios were not capable of transmitting on a digital
or even 800 mhz band channel and the company that makes their radio didn't
offer and didn't plan to offer any time in the near future a module that
would be capable of that bandwidth.

Too bad they couldn't work out some kind of patch ahead of time.

My 2 cents.

Joe
-----Original Message-----
From: <ka3jjz at netscape.com>
Date: Thu, 19 May 2005 12:59:58 
To:scan-dc at mailman.qth.net
Subject: Re: [Scan-DC] Police Interoperability

  Shameful, utterly shameful. First someone has completly out of date
information (453.2 was indeed Baltimore citywide pre trunking), they
couldn't patch over to 460.05 (Metro) and most surprising of all, didn't
know about the use of the ITAC/ICall frequencies which are supposed to
provide this kind of interoperability. And I can't believe that no one in
either are knows about the digital trunkers...

  Someone over in the comms area at MSP and Baltimore city needs to become
better informed.  Utterly pitiful.

  73s Mike

links editor,Capitol Hill Monitors
Utility Monitoring Central
editor, Strong Signals software page
moderator, Long Island Scanning Resources DC board


--- Rapbep at aol.com wrote:

From: Rapbep at aol.com
Date: Thu, 19 May 2005 15:47:50 EDT
To: scan-dc at mailman.qth.net
Subject: [Scan-DC] Police Interoperability

All,

In the 1500 hour EST on 123.025 Maryland State Police helo Trooper 1 was 
chatting with Baltimore City Police helo Foxtrot 4, asking for help on a
city-wide 
freq they were supposed to be operating on.

Trooper 1 indicated there was a high-risk joint police op involving the
State 
police and Baltimore City police and they were supposed to be listening on 
the city-wide freeq in case they were needed for medevac in case an officer
was 
injured during the operation. Trooper 1 indicated that all they had in their

radio for a city wide freq  was 453.2 but that they was no one on that freq.


I could weakly hear the Baltimore PD controller pass a freq to trooper 1 who

indicated that it must be a trunked freq and that he couldn't operate on
their 
trunked system. Trooper 1 then indicated he had receive subsequent info that

they were to operate on the Metro freq (nfi). Foxtrot 4 acknowledged and
said 
that should work.

Trooper 1 was exaspirated with the interoperability problems bemoaning the 
fact that they had millions of dollars tied up in their platform and they 
couldn't talk to folks when they needed to. Trooper 1 ended by saying that
next time 
they would bring some tin cans and some string which would work better.

Foxtrot 4 indicated that they had tried to switch all the players to channel

16A (nfi), probably on the trunked system, but that didn't work either and 
they were all trying to link up in the Metro System.

In the late 1500 hour, Foxtrot 4 offered to relay comms from channel 16A to 
Trooper 1but informed Trooper 1 that they couldn't get any comms from
channel 
16A themselves. Foxtrot 4 told Trooper 1 they couldn't raise anyone and had
no 
info on the police operation. Troopr 1, finally exasperated, indicated that 
with no info on the operation and no comms with the folks involved that he
was 
heading back to Martin State.

RON
ANNE ARUNDEL COUNTY, MD (NEAR BWI)
Pro-2045/BC-895XLT w/Discone
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Joe Bradley
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