[HBR] HBR-8 Questions

[Glenn Finerman]

Mike wrote;

<snip>
With AM, not counting synchronous AM demodulation, as you point out all you
need is a rectifier,
that is why you do not need the product detector. If you were to still have
the BFO injection on then you would
continue to hear the heterodyne beat note. If you turned it off, well than
the product detector should have no output as it only has one input and it
depends on both to generate it's output. 73 - Mike
>>>>>>>>>>>>>>>>

Thanks for the post Mike. I guess I should have been more specific regarding
the HBR-8..... Since the HBR-8 has no AM detector, and you need the BFO with
the product detector to receive CW/SSB, then why does the schematic show a
switch to shut it off??? This was apparently a mistake. (unless the AM
modification for the HBR-11 was already planned when the HBR-8 article was
written?)

I imagine if the HBR-8 did have an AM detector, you would include the BFO
on/off as part of the AM/SSB switch

Glenn K2KL