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- From: uni@acs.bu.edu (Shaen Bernhardt)
- Newsgroups: rec.autos.driving
- Subject: Re: Police transmitter detectors
- Keywords: Radar
- Message-ID: <108084@bu.edu>
- Date: 23 Jan 93 21:17:25 GMT
- References: <1508@fozzy.UUCP>
- Sender: news@bu.edu
- Distribution: rec.autos.driving
- Organization: Boston University, Boston, MA, USA
- Lines: 53
-
- In article <1508@fozzy.UUCP> jcross@aud.alcatel.com writes:
- >Several years ago, I used to see adds for a little box folks were
- >selling that would detect any police in a 2~3 mile range. It
- >worked on the simple priciple that the highway patrol folks had
- >a radio transmiter in their cars that they left on most~all the
- >time. I don't recall why the X-mit device existed or why it was left
- >on, but that's not really important. What is important is, does
-
- What your talking about is a "CHiPs detector"
- These were marketed some years back, I dont know if they are still around.
-
- The Principal was:
- Many State Troopers have a "Mobile Extender" device, a transmitter which
- allows them to talk on their portable radio when outside the car, and have
- the signal rebroadcast over the 75-100W mobile radio in their car.
- In addition it transmitted any chatter that came over the car radio back
- to the portable, so the trooper could stay in touch.
-
- As the transmitter ran about 3-5W, and keyed up everytime the dispatcher
- said ANYTHING to ANY TROOPER out there, it is useful to listen in. Most
- likely when you hear something on this frequency, there is a trooper somewhere
- near by.
-
- Troopers wouldn't tend to turn these off, as a foot chase would render them
- out of contact with the dispatcher.
-
- Problems with the system are the following:
-
- 1> Often times the Dispatcher will remain silent for minutes at a time.
- Unlike local and municipal police, state police and highway patrolmen are
- VERY disciplined with their radios. In my experience, 15 minutes can go
- by between transmissions in the wee hours. That's 15 minutes for you to
- stumble on a trooper with no warning at all.
-
- 2> Not all states have mobile extenders in troopers cars.
-
- 3> Some states have SOME cars with mobile extenders, others without....
- A False sense of security is lethal to a speeder.
-
- My suggestion: If it is legal in your state to carry one in your car,
- buy a scanner. You can get the same frequencies for almost the same
- price, and you can HEAR what's being said.
-
-
- >Anyway help would be appreciated...
- >
- >-Jeff
-
- uni
-
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