Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!ncar!umigw!mthvax!wb8foz
From: wb8foz@mthvax.cs.miami.edu (David Lesher)
Newsgroups: sci.electronics
Subject: Detecting Police cars was: Radar Detectors
Message-ID: <1990Aug4.004727.5237@mthvax.cs.miami.edu>
Date: 4 Aug 90 00:47:27 GMT
References: <324@bally.Bally.COM> <13317@mcdphx.phx.mcd.mot.com> <26b8be39-32e.2sci.electronics-1@vpnet.chi.il.us>
Reply-To: wb8foz@mthvax.cs.miami.edu (David Lesher)
Organization: NRK Clinic for habitual NetNews abusers
Lines: 20




>In Illinois, most police cars carry a Motorola receiver locked to the ISPERN
>frequency.  (A statewide emergency network.)  I have toyed with the idea of
>building an ISPERN detector; it would detect police _cars_, not the radar.

It can be done lots easier.
Some depts. equip their troops with mobile crossband repeators.
Thus the ticket_pusher's 450 mhz handheld will come out on the
car's 100 w. hi (or low) band radio, and verse vica.

All you need to do is listen on the car_to_trooper 450 mhz xmit
frequency. When you hear it, he's nearby!

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