[time-nuts] need recomendation for a portable 10mhz referenceoscilator

[Jeff Mock]

SAIDJACK at aol.com 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