I've got to lay off the hard stuff so early in the morning... please allow me to correct the following.
> I'd venture to say... if your receiver front end is > of decent Q (quality) and reasonably narrow band-width > along with a decent duplexer... then the preamp might > best go after the duplexer, between it and the band-pass > cavity. Should have said: "then the preamp might best go after the duplexer and the trailing band-pass cavity, between the the BP Cavity and the receiver front end" that is all... tnx s.