Technology0 min ago
TV Detector vans
10 Answers
Throughout the 70's and 80's we were all warned that TV Licensing detector vans could locate TV's being used in a house that had no TV licence. An old Transit or Commer van with a metal radar device on the roof, was shown stealthily driving around the streets, homing in on unsuspecting miscreants.
Did they really have the technology in the 70's to home in on one TV signal in a street-full of TV's? In the back of a van? !! ?
So was it just a hoax to make you pay up?
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For more on marking an answer as the "Best Answer", please visit our FAQ.The intermediate frequency of a tv gives off a faint radio signal that can be picked up with fairly simple equipment. The main reason the equipment was large was to amplify and pinpoint the position of the signal. Yes, they did work, but I think it was the scare tactics that were the main factor as it would have been too expensive to send these vans around every single unlicensed home.
The technology they had and still use is a directional microphone which they pointed at the vulnerable parts of a house. IE The window, they would then tune into TVs in the back of the van to see if the sound matched the picture to tell what channel you are watching. The same is done with hand hand directional microphones and Tvs in blocks of flats.
Fair enough but don't say I didn't warn you when they come knocking.
http://www.tvlicensing.co.uk/penalties/detection_tvvans.html
http://www.tvlicensing.co.uk/penalties/detection_tvvans.html
http://www.tvlicensing.biz/
Try this site for good information. Also, when you buy a telly now they insist on taking your address (most shops won't let you out of the door with the telly unless you comply). This, to me, is real bully boy tactics.