Dave Plowman (News) wrote in message
...
In article ,
N Cook wrote:
The same with one of these digital boxes. Good external Yaggi and
downlead and the signal bar is 80 to 100 percent on all stationss except
two. Moving the plastic cased box around there is a point , in mid
space, where the "no signal" box disappears and the signal bar goes to
20 to 30 percent on those channels. Have to be barefoot to work, also
wearing a glove nullifies the effect. Any advice on how to progress,
grounded aluminium around the box? local ghosting effect ? if so why
only 2 stations affected out of the 10 or more on that one multiplexed
UHF channel

If there's that much pickup on the box or downlead, there's something
wrong. Short in the co-ax or connector?

--
*I never drink anything stronger than gin before breakfast *

Dave Plowman London SW
To e-mail, change noise into sound.


Looking a bit deeper the main problem stations are on UHF Channel 33, Mux D
the highest frequency of the local (Rowridge) group.
Unless anyone knows how to push the problem into the totally junk and so
deleted shopping channels, looks like a new yagi and downlead.
A near neighbour has no problem with any freeview channel with a relatively
short Yaggi in his loft space.
The immediate neighbour, so yaggi only a couple of feet away and parallel,
uses a line powered headend amp which perhaps could be
radiating/interfering/coupling. Perhaps a different mounting position should
be considered also.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/