[Wolves] Digital Radio (OFFTOPIC TV detectors)

[sparkes]

The artist formally known as Chris Procter was heard to say...
> I remember hearing that they could actually detect what channel you were
> watching so I suspect some sort of van Eck phreaking
> (http://whatis.techtarget.com/definition/0,289893,sid9_gci550525,00.html)
> is
> used but that should only get TVs that are on.
>

if you have a portable that is switchable to different frequencies you can
see that in action at home.  It's possible to use a VHF(at least I seem to
remember it was vhf) recieving tv to see the images on your normal tv by
pointing an arial at it.

specially developed tempest boxes would have tuned arials etc so could
probably work over larger distances and be very directional.  I attemped
to pick up the frequences from a monitor once and could get black bars on
the screen (but nothing readable) from a couple of rooms away.  This was
drunkenly proving a point to a freind who thought that tv's and monitors
emitted no radiation and it was all an old wives tale.  We could watch a
fuzzy image from a tv in the next room and see and hear what was going on.

I also once had a video that was so screwed up I could watch it upstairs
tuned to channel 60+ (normal wired channel was 36, pre channel 5 days)
without any physical connection.  I was almost running a pirate tv station
with the bugger.  You could probably tell what channel I was tuned to or
what video I watching from several houses away.  Not a hard one for the tv
detector van ;-)
>
> chris
>
>
sparkes