In message ,
Janet wrote
or, that your new aerial is too high-gain for such proximity to the
transmitter , overloading your receiver. A smaller weaker aerial might
be the answer.

Or an inline attenuator - 99p incl postage
http://www.beststuff.co.uk/coaxial_accessories.htm
6dB TV Attenuator.
9dB TV Attenuator.

The digital TV receiver electronics use more than analogue TV, but an
LCD display uses less than a cathode ray tube, so overall the power
usage is lower

The transmitter power is also much lower

--
Alan
news2009 {at} admac {dot} myzen {dot} co {dot} uk