Diversity reception is characterized by perceived "phase precessing" between the two receivers' audio streams due to varying phases of the main and sub RF input signals. You don't want additional, unpredictable phase precessing on top of that due to the receivers themselves. Additive phase changes would sometimes make diversity reception less pleasant to listen to. Better to have the receivers locked together, eliminating a variable.
Wayne N6KR On Feb 17, 2015, at 10:02 PM, Vic Rosenthal <[email protected]> wrote: > I know it's true, but I don't see WHY the receivers need to be phase-locked. > After all, the signals are entirely separate until they are combined in your > head. There isn't a question of interference/ reinforcement at RF. > > Vic 4X6GP/K2VCO > >> On Feb 17, 2015, at 9:31 PM, Wayne Burdick <[email protected]> wrote: >> >> In diversity mode, the main and sub RX synthesizers are guaranteed to be >> phase-locked to each other if the crystal filters selected for main and sub >> both have exactly the same frequency offset. The offset for all 8-pole >> filters is 0.00. The offset for 5-pole filters varies, and can be ordered in >> matched sets for main/sub. >> >> Wayne >> N6KR > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
