[time-nuts] Efratom FRS 10mhz rubidium frequency oscillator+ board

GandalfG8 at aol.com GandalfG8 at aol.com
Sun May 31 15:29:23 UTC 2009


Bob, Fluke.1, is selling these on Ebay, for  example item #  290313671907, 
and supplies the FRS module itself with an interface  board containing the 
FRS connector, plus another PCB containing a  15MHz oscillator and assorted 
other parts that the FRS interface board plugs  into.
 
Connecting up the FRS itself via the 10 way header on the  interface board 
is simple enough, most connections are marked and  others easily traced, but 
there's no information available regarding the  other PCB.
 
Does anyone have any information regarding the  purpose of this board 
and/or connection details for the fitted 25 way D  type and TNC connectors?
Any information on  the functions of the various jumper pins would also be  
appreciated.
 
regards
 
Nigel
GM8PZR



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