[aprssig] In car power solution for GPS 18

[Andrew Rich]

Ah,

the point from which this all runs is off an accecory line.

It is fused on a plug i can pull out in case of problems.

Valid point tho.

-----------------------------------------
Andrew Rich
Amateur radio callsign VK4TEC
email: vk4tec at tech-software.net <mailto:vk4tec at tech-software.net> 
web: http://www.tech-software.net
Brisbane AUSTRALIA 



-----Original Message-----
From: Dale Blanchard [mailto:wa7ixk at earthlink.net]
Sent: Sunday, 13 August 2006 4:53 AM
To: vk4tec at tech-software.net; TAPR APRS Mailing List
Subject: Re: [aprssig] In car power solution for GPS 18


Andrew Rich wrote:
> Gudday
>  
> When I jump in my car, my GARMIN GPS18 (5volt version) takes a while to 
> lace up on the sats. (because it has been off)
>  
> I am wondering if I can throw a gell cell battery in there and charge it 
> while the car is running. (and GPS going when the car is off)
>  
> Now I need to know
>  
> 1) Should there be a diode in line ?
> 2) Should there be a resistor to limit current to battery on charge ?
> 3) Any low voltage cutout ideas ?
>  
> Cheers
Why don't you just leave the GPS powered all the time.
I leave mine on all the time.
Even on a trip with my motorcycle with a smaller battery.
It will take a long, long time to run the battery down.
WA7IXK

dale