Michael Black wrote:

The transmit were usually overtone, the actual frequency being around
9MHz, the receive crystals would be the signal frequency minus the IF
frequency (often 455KHz, but some had a higher IF), and they too were
usually overtone crystals. The good thing is that since you're moving it
to a ham band, you can pick any frequency within the band, the bad part is
that some parts of the band are better than others in terms of activity,
especially for AM, and you need to find a pair of crystals for the
frequency.

If it's old enough to use crystals, it probably AM only. Aren't technicians
permitted on 10m cw and ssb only?

Geoff.

--
Geoffrey S. Mendelson, N3OWJ/4X1GM
My high blood pressure medicine reduces my midichlorian count. :-(