"Richard Knoppow" wrote in message
m...
As far as selectable sideband in an SSB adaptor AFAIK all worked by
means of either shifting the signal to the filter frequency or having two
filters. I don't see how phasing would work in a receiving adaptor. There
were numerous phasing type SSB generator for transmitting, for instance
the one made by Barker and Williamson who also made 90degree audio phase
shifting networks for use in home made ones. I still have the B&W adaptor
I used in the 1960s. It worked pretty well but had to be adjusted for any
large frequency change. Stable high performance filters or reasonable cost
pretty much ended the use of phasing type exciters.
In any case, a good performing receiving adaptor which would work on
older receivers, especially tube receivers, would be welcome. The old
Hammarlund and TMC units are pretty hard to come by and, I suspect,
something modern would outperform them.
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Richard Knoppow
Los Angeles, CA, USA
WB6KBL
The Central Electronic Sideband Slicer used phasing for SSB reception.
On the other hand, the B&W 370 used the filter method.
Pete