[TenTec] manual for Mode B sat station (2510)

[Bill W1PA]

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.