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[aprssig] Optima Batteries?

scott at opentrac.org scott at opentrac.org
Thu Mar 31 15:26:49 UTC 2005

I just checked the big, dumb, cheap marine deep-cycle battery sitting here.
It's 45 lbs, cost about $45, and is rated at 85 Ah, 700 MCA.  Item #12851
from Costco.

I don't think I'd commit a D700 to digi operation though...


-----Original Message-----
From: aprssig-bounces at lists.tapr.org
[mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Brian B. Riley
Sent: Thursday, March 31, 2005 6:10 AM
To: TAPR APRS Sig; Josh Keller
Subject: Re: [aprssig] Optima Batteries?

While various new high efficiency battery technologies have some impact upon
this, the general rule of thumb is ...  "the heavier  the battery the
greater the capacity" ... you need to determine your current requirements
and make your decision.

 Personally I feel that you would be better off with a KPC3(+) a Yaesu
VX150, a 17 AH gelcel, and a couple of sections of Rat Shack mast than
trying to power a D700 for any period of time from even a 75AH battery. 5
watts and 20-30 feet of mast will usually trump 45 watts and 8 feet of
antenna. The overall lightness of the setup I am suggesting also means it
could be carried farther up the mountain to be placed and useful.

Cheers ... 73 de brian, n1bq, underhill center, vermont

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