On 03/05/04 00:14, Visionsat said...
you might need a db gain amplifier to compensate
for the db loss of the di-plexers.
I have been doing this for years and have never seen more than about a single dB lost through a diplexer. Being overcautious, two dB for mixing and separating... a 15 dB amp might introduce more problems that it solves unless the signal level is already marginal.
God bless whoever invented the signal level meter. It has made me able to SEE the levels in situations like this!