In a message dated 12/11/2007 17:00:17 Pacific Standard Time, [EMAIL PROTECTED] writes:
>A very high quality ocxo would probably satisfy the need. Or as someone >suggested, a combination of ocxo and a Rb. The Rb would provide the longer term >needed for the really high multiplication into upper GHz region and the ocxo >locked to Rb would [ possibly ] provide the "quiet" drive source. >Bill....WB6BNQ Hi Bill, a Rubidium would take about 15 to 20 Watts, and they don't usually work at 12V battery voltage typically. At 20 Watts we would consume 1.67A at 12V, so a (large) 80Ah car batt would only last two days in best conditions at room temperature. If we add the OCXO power and low battery temperatures, then we are probably down to 20 to 24 hours of operation or so. BTW: interestingly Lead battery capacity is also related to discharge current, not just temperature. bye, Said **************************************See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004) _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
