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» Film-Tech Forum ARCHIVE   » Community   » Film-Yak   » Cop Cars with many MANY antennas on the roof. Why?

   
Author Topic: Cop Cars with many MANY antennas on the roof. Why?
Frank Angel
Film God

Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999


 - posted 05-12-2014 10:10 AM      Profile for Frank Angel   Author's Homepage   Email Frank Angel   Send New Private Message       Edit/Delete Post 
Just a curiosity -- Occasionally I see cop cars, usually unmarked, that had literally half a dozen small antennas over the roof and sometimes on the trunk. What are they for and why so many? Couldn't a single antenna serve however many receivers might be in the car?

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Jim Cassedy
Phenomenal Film Handler

Posts: 1661
From: San Francisco, CA
Registered: Dec 2006


 - posted 05-12-2014 10:33 AM      Profile for Jim Cassedy   Email Jim Cassedy   Send New Private Message       Edit/Delete Post 
I've been told that here in San Francisco the cars with the multiple antennas
are used to track the small transmitters that bank tellers & some some busineses
hide inside of the money-bags during a robbery. If you look inside such a car
you'll see they are equipped have a lot of "extra" radiocrap in there.
I've also heard they can be used to track some types of stolen vehicles.
So, basically the cars with extra antennas are "tracking vehicles", if
the anecodotal info I have is correct.

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Jarod Reddig
Jedi Master Film Handler

Posts: 513
From: Hays, Ks
Registered: Jun 2011


 - posted 05-12-2014 02:16 PM      Profile for Jarod Reddig   Email Jarod Reddig   Send New Private Message       Edit/Delete Post 
Interesting. Ive seen the same cop cars with the extra antennas as well and have always wondered.

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John Eickhof
Jedi Master Film Handler

Posts: 588
From: Wendell, ID USA
Registered: Jan 2000


 - posted 05-13-2014 11:32 PM      Profile for John Eickhof   Author's Homepage   Email John Eickhof   Send New Private Message       Edit/Delete Post 
yes some of that s true, also some have multiple radios sets for allied agency frequencies as well as transponders for the on board computer and direct connects with dmv computers and probation depts,etc., and once in a while, an authentic old radio scanner! Real radio is not dead yet

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Marcel Birgelen
Film God

Posts: 3357
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012


 - posted 05-14-2014 03:08 AM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
- New, but yet not fully operational digital system #1
- Digital system that never was #2
- Legacy analog system #1
- Legacy analog system #2
...
- GPS antenna
- Cell phone antenna #1
- Cell phone antenna #2

Might explain why the roof of a fully featured cop car looks like a miniature version of the roof a Manhattan highrise. [Wink]

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