matt weber wrote:
On Fri, 4 Apr 2008 17:38:22 -0700 (PDT), denny
wrote:

Any one have any experience using manual ECSS tuning on a Drake R8A
instead of the synch detector? How does this also compare to using the
selectable sideband synch detector on the Drake R8B? Is there any
difference between either of the 2 methods in reception and audio
quality?
Using the synch detectors results in phase lock with the carrier, so
the carrier is re-inserted in phase with the side band(s). Using
manual tuning with the BFO and product detector does not phase lock
the injected the carrier with the original carrier, resulting in
Unavoidable phase distortion of the audio (you get lower 'quality'
audio".

"Quality" is subjective. The R75 has excellent intelligibility when in
ECSS mode and music is not objectionably chipmunked-up or anything.

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