Richard Knoppow wrote:
I found the handbook for the CE box on BAMA and will have
a look at what they are doing.


Hi,

The Central Electronics Slicer was based on the GE Signal Slicer,
which appeared in GE Ham News, July-Aug 1951.

BANA has the issue, under the category gehamnews, filename ge0604.pdf

The GE article shows how to build it, including the the 90 degree
audio phase shift network. It's pretty slick -
a selectable sideband adapter based on a phase shifting circuit,
for any 450kc to 500kc i.f. receiver.

73,
Ed Knobloch