Jerry,
I took a quick look, and most of the crystals are in the 40 or 60Mhz range.
It also looks like the 2510B had an accessory oscillator board slot to give
it
an additional range above 435... I am wondering if a custom built board
could give
432 with minimal intrusion (and reversable), save for the re-tuning.
Bill W1PA
I presume its certain that one of the UHF injection crystals could be
changed to get 432, or maybe there's an intermediate mixer and an IF
between 9 and 435 MHz that could be moved. Though it may be what moves or
the bandswitching and the UHF injection is fixed. I presume that it uses 9
MHz and a 5 MHz VFO to create SSB at 14 MHz then mixes up from there in one
or two steps. If in one, then the selectivity at 435 will be fairly tight
and might need retuning to use 432 and might not allow 432 and 436 without
retuning.
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