[Milsurplus] Crystals for AN/PRR-9/AN/PRT-4

[John Vendely]

International Crystal should be able to make these for you at a 
reasonable price.  Tell them it's a CR-81/U, and the third overtone 
frequency (the L.O. freq in this case, which is indeed the same for both 
transmitter and receiver).  Since CR-81/U is a MIL spec xtal, they 
should have the specification on hand.  It would hurt to mention that 
it's for a PRT-4 or PRR-9--they may very well have made these for 
others, and have an internal spec for it.  In the very unlikely event 
they don't know what it is, you could arrange to send them a sample, 
which they could analyze.

73,

John K9WT

On 7/9/2011 3:04 PM, WA5CAB at cs.com wrote:
> Does anyone know of a crystal company (still in business) who can make
> crystals for AN/PRR-9 and AN/PRT-4?  The receiver crystal is a CR-81/U holder
> with a third-overtone crystal.  I didn't go dig out the manual on the
> transmitter but presume it probably uses the same type.
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
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