I've been thinking about getting more crystals for my (new to me) SPR-4. I know I can get custom crystals cut, but that may be too expensive.

I found someone who sells reasonably priced crystals for the 4 line radios, however, his crystals are listed as being slightly different than the ones in the SPR-4 manual.

For example, his is listed as the one for 10 mHz reception is 21.100 mHz, the manual lists it as 21.09 mHz. (note the difference in decimal places)

Is this just a rounding error? Is there really a difference? Will 10kHz make a lot of difference? These would be for adding ham band reception, which except for 40m is missing.

Thanks in advance?

Geoff.
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geoffrey mendelson N3OWJ/4X1GM
Jerusalem Israel [email protected]






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