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[aprssig] Garmin GPS-18 power saving.

Robert Bruninga bruninga at usna.edu
Fri Apr 28 20:05:10 UTC 2006


We are going to use the cigarettte lighter regulator
because it is an efficient constant power switching 
regulator and it comes with it.  That gets the most
out of our Lantern Batteries that will go from 12 down
to 6 volts before end of mission.   Bob

>>> scott at opentrac.org 04/28/06 2:45 PM >>>
The cigarette lighter plug?  I'd just skip it and build a 5-volt supply
myself.  The LVC model doesn't come with any regulator at all.

Don't forget the SNSRCFG utility - you can set some parameters there that
might save some more power.

Scott
N1VG 

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Robert Bruninga
> Sent: Friday, April 28, 2006 11:37 AM
> To: aprssig at lists.tapr.org 
> Subject: [aprssig] Garmin GPS-18 power saving.
> 
> I just reduced the 60 mA of my GPS-18 to 40 mA
> by clipping out the LED in the cigarette lighter plug.
> 
> Thats a power saving of 33% and is significant
> in our ocean going APRS buoy we will be deploying
> soon.  I was amazed. (now I hope that the LED
> is not somehow otherwise involved in the circuit.
> We'll see.
> 
> Bob, WB4APR
> 
> 
> 
> 
> 
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> 
> 




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