[aprssig] GPS/Puck or Other Wise
jdw at eng.uah.edu
Sun Jul 10 08:46:34 CDT 2005
On Jul 9, 2005, at 4:14 PM, Stephen H. Smith wrote:
> 4) Why worry about switching the GPS on and off at all? A device
> like the Garmin GPS-18 powered by a decent switching mode regulator
> (not a 7805 linear device) only draws 50-60 mA at 12VDC which
> translates to about 1 Amp-Hour a day. You can leave this device on
> for a week or more without affecting the car battery significantly.
> The advantage is that the GPS is always locked and has a currrent
> ephemeris and almanac ready-to-go.
I agree with Stephen - just leave the GPS on and let it keep a lock.
I have an old Trimble SV6 (that's powered by a 7805) that stays
connected in my F150 24x7. The only time I disconnect it is about once
a year when I leave for a week's vacation. The GPS is always powered
up ready to go.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 831 bytes
Desc: not available
More information about the aprssig