david wrote:

Thanks but the aerial signal is, at times, very weak and so I don't
think this would work - but thanks for trying.

How is your amplification and distribution done? With a combined
amp/splitter or with an amp followed by a passive splitter?

If the latter, then you can do the combination between amp and splitter
rather than at the input.

If the former, then use a quality low loss inductive combiner and
attenuate the level of the modulator to be in the same range as the
aerial signal level before the combiner. Then feed the combined signal
to the distribution amp.

See:

http://cpc.farnell.com/jsp/endecaSea...=AP01305&N=411

Attenuators are available in a good range of values from 3 to 18dB:

http://cpc.farnell.com/jsp/endecaSea...U=AP18DB&N=411


--
Cheers,

John.

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