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[aprssig] APRS Buoy Project

Ben Jackson ben at ben.com
Sat Jul 19 04:49:15 UTC 2008


On Fri, Jul 18, 2008 at 08:11:06PM -0400, Robert Bruninga wrote:
> 
> This model only needs to float a few weeks for tracking ocean
> currents and then be recovered.  SO it only needs two lantern
> batteries, a MicroTrak8000 FA tracker and Byonics GPS.

When I did research for an APRS buoy I compared a lot of possible
batteries and lantern batteries came out near the bottom for price/
performance and also power density (based on duracell datasheets).
Plain old D cells were the winner.  The other problem with lantern
batteries is that there are some really crummy ones out there
with half the AH of the good ones.

Of course I wanted to keep a buoy going for years with a powerful
transmitter, so it's not such a big deal for your immediate application.

-- 
Ben Jackson AD7GD
<ben at ben.com>
http://www.ben.com/




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