Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!asuvax!hrc!chanel!ngc
From: ngc@chanel.UUCP (Chris Ng)
Newsgroups: sci.electronics
Subject: Re: Television detection.
Message-ID: <48591bd2.1fbc0@chanel.UUCP>
Date: 30 Jan 90 18:11:30 GMT
References: <2981@servax0.essex.ac.uk> <428@ssc.UUCP>
Organization: gte
Lines: 35

In article <428@ssc.UUCP>, markz@ssc.UUCP (Mark Zenier) writes:
> In article <2981@servax0.essex.ac.uk>, zotog@sersun0.essex.ac.uk (Zotos G) writes:
> > In UK they use a system (detector, presumably a sort of receiver) to detect
> > a non-licence TV household.
> > 
> > Does any out there has any idea of how this is done?
> > What exactly they detect ?
> 
> An article (lost in the mists of time ) make me think they use leakage out
> of the IF, since they were listening for the sound.
> 
> Another system picks up the horizontal sweep, and compares the phase to
> determine which station is being received.
> 
> markz@ssc.uucp

How do they know the TV household is a non-licenced one? 


  












-- 
Chris Ng
UUCP: {asuvax | hrc}!gtephx!ngc