[MRCG] SCR-522 XTALS and other XTLA Questions

[Jack Antonio]

On 3/3/2014 6:51 PM, willi6 at starpower.net wrote:
>
> I recently came across a BX-40 Crystal Box with most of the crystals

   It starts at Channel 270 (5675 KCS) and goes to Channel 389 (8650 KCS).

   It is missing four (4 ) c rystals , some of which which I believe were

  the typical useful 40-Meter rocks.

   The missing channels are 330 (7175),  325 (7050), 324 (7025), and 322 
(6975),
>
> Any idea what radio type this "Rock Collection" was typically associated with?


The crystals are for the BC-1335 and BC-659 VHF FM radios.  The channel
number is the output frequency times 10.  For example, channel 270 is
for a frequency of 27.0 mc,  channel 389 is 38.9mc.

The formula for the crystal frequency is xtal=(frequency-4.3)/4, where
xtal is crystal frequency, and frequency is operating frequency.

Hope this helps.

Jack Antonio WA7DIA/4