wrote in message
oups.com...
Hi Group,

I am looking at moving the old CB up to 10meter CW/SSB, One thing I
have never seen is the addition of a BFO circuit to copy SSB and CW.

The radio has a first IF of 10.695 MHz and the next one is 455KHz.

I believe that 455KHz is the place to add the BFO and I think that the
455KHz IF must be mixed with another frequency, say either +/- 1KHz to
get the sidetone.

I don't know if this would work for SSB reception?

YOu can build a BFO for either one of three frequencies.
1. Near the input signal
2. Near 455 khz
3. near 10.695

It will almost have to be variatable as the CB rig will be crystal controled
and unless it has a fine tuning control (most of the AM units did not ).