[EMAIL PROTECTED] wrote: > 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 >
I think the situation is somewhat better than that. I'm looking at my LPRO-101. It's about 18-watts while warming up, but once the physics package is up to temp and locked, the power consumption drops to about 5-watts. The larger rubidium modules are probably more power hungry, but the small onces aren't so bad once they are running. You still might need a trunk full of batteries though... jeff _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.