Good weather, picture breaks up
 

I live on the East Anglian coast, receiving from Sudbury, although
officially outside the reception area for digital TV. My aerial points
roughly westwards, so the back of the aerial is "looking" at Holland or
thereabouts.

In poor weather the reception on all channels is fine.

In clear, sunny weather - especially in the summer - I get picture break-up
on the ITV channels.

I vaguely believe that sunny weather allows signals to propagate over longer
distances (is this correct?). Therefore, I suspect that my picture break-up
is not caused by a loss of signal strength at the front of the aerial, but
an increase in rogue signals from the continent on the back of the aerial.

Does this seem reasonable?

If this is the case, a booster amplifier would not help at all. Correct?

Is there anything I can do to improve the situation? Sudbury requires a
wideband aerial for digital TV, and I've got a DAT75 because it apparently
has the best forward gain, and front/back ratio, of any wideband aerial. I
assumed this would be important in my circumstances.

Thanks,

Steve

Good weather, picture breaks up
 

In article , Steve Thackery
writes
I live on the East Anglian coast, receiving from Sudbury, although
officially outside the reception area for digital TV. My aerial points
roughly westwards, so the back of the aerial is "looking" at Holland or
thereabouts.

In poor weather the reception on all channels is fine.

In clear, sunny weather - especially in the summer - I get picture break-up
on the ITV channels.

I vaguely believe that sunny weather allows signals to propagate over longer
distances (is this correct?). Therefore, I suspect that my picture break-up
is not caused by a loss of signal strength at the front of the aerial, but
an increase in rogue signals from the continent on the back of the aerial.

Does this seem reasonable?

If this is the case, a booster amplifier would not help at all. Correct?

Is there anything I can do to improve the situation? Sudbury requires a
wideband aerial for digital TV, and I've got a DAT75 because it apparently
has the best forward gain, and front/back ratio, of any wideband aerial. I
assumed this would be important in my circumstances.

Thanks,

Steve



The south East of Suffolk and Essex is always problematical under lift
conditions. An amplifier will make this worse. What you need to do is to
get the "wanted" signal i.e. from Sudbury, sufficiently stronger that
than "unwanted" what's coming in from over there...

If you are where I think your likely to be you may if their DTV equipped
as yet, use one of the few relays along the coastal region. However as
good as they are with the off air receiver aerials they use their still
likely to pick up the same junk and re-radiate that unless they are
Satellite sourced, but I somehow doubt that ..

Otherwise D SAT may prove the long term answer!...

Sudbury has some limitations about the power radiated that direction
something about that here...

http://tx.mb21.co.uk/gallery/sudbury.shtml
--
Tony Sayer