Asynch designs

[Stan Barr]

Hi,

Roy J. Tellason said:
> On Saturday 12 August 2006 07:49 pm, Don wrote:
> > IIRC, in the UK they have mobile units that wander around trying
> > to see how many televisions each home has (?)
> 
> I remember reading about that some time ago (decades?),  and wondering since 
> then how much that whole thing had gotten messed up since computer monitors 
> had come into the picture.

The detector vans looked for the local oscillator radiation from the tuner,
uhf for the past 20 years or so, using a pair of rotateable horn antennas 
to get a precise fix on the set.  I don't think they use them any more, 
I've not seen one for years.
-- 
Cheers,
Stan Barr  stanb at dial.pipex.com

The future was never like this!