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From: motcid!svec@uunet.uu.net (Larry Svec)
Newsgroups: comp.dcom.telecom
Subject: Re: What the 911 Operator Knows
Message-ID: <16389@accuvax.nwu.edu>
Date: 24 Jan 91 19:05:09 GMT
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X-Telecom-Digest: Volume 11, Issue 65, Message 4 of 11


My town (Wauconda, IL) has 911.  It shares the same dispatch with a
number of surrounding towns.  When you call 911, they use the national
police point to point frequency of 155.37 Mhz to relay to the proper
local town or if it is unincorporated area (such as where I live),
they call the Lake County PD.  Typical scenario ... I once called 911
for a car fire, then heard the same person that answered the phone
call Wauconda Township Fire on their point to point 155.37.  Wauconda FD
dispatched on their frequencies of 153.89.  The 911 dispatcher called
Lake County PD also on 155.37 about it.  Lake County PD dispatched on
their 155.655 repeater. My conclusion is based on extensive 'scanner'
monitoring ... some of the towns in the US with 911 serving a few
towns seem to then further dispatch to the proper town via the 155.37
point to point frequencies.


Larry Svec - KD9OF
home: 708-526-1256   e-mail: uunet!motcid!svecl     VHF: 145.150-
work: 708-632-5259      fax: 708-632-2413, -3741    UHF: 443.575+


[Moderator's Note: I frequently scan the twenty or so frequencies of
the Chicago PD. (460.050 --> 460.600 megs). The suburbs which touch
the city seem to monitor the city frequency for the area bordering
them, while maintaining their own frequencies, usually at 470 megs.
The suburbs which touch us all have their own 911, except I think
Lincolnwood shares with Skokie. It is not uncommon to hear the
Evanston dispatcher come on 460.375 (Chicago Districts 20 / 24) with a
message saying the Evanston PD is on a chase and asking Chicago to
help, or vice-versa. For fires, when Chicago Emergency answers, the
default is the PD, but the dispatcher merely tap a button on the
console and the call is patched right over to Fire in a matter of two
seconds or less.   PAT]