[Icom] Battery Operation

[Clifford, Rick]

I just bought a Lifeline GPL-24T for portable operation with my IC-746.
Fully-charged, this 80 Ah battery puts out about 12.9V. I used it quite
successfully (with a very limited amount of discharge) on a hilltopping
operation running for about 3 hours at 50W.

But I run only CW so I guess no problem.

I wonder why the radio manufacturers don't design their units to =
operate in
a 12-14V range?

73,

Rick

-----Original Message-----
From: William Lambing [mailto:W0LPQ9@msn.com]
Sent: Friday, June 13, 2003 2:31 PM
To: Icom Reflector
Subject: [Icom] Battery Operation


The problem with battery operation is:

What is the output voltage?

Is it 12V or 13.6/13.8V?

Many radios sound absolutely horrible at 12V.  Some shut down, some =
start to
FM...and on and on.  Listen to Midcars or ECARS someday while some of =
these
guys, mobile, with the engine shut off attempt to contact someone.  95% =
of
the time, they are completely unreadable.  Now if you run CW...then all =
bets
are off..!  This mode usually works just great.  It is the SSB peak =
output
that gets you in trouble.  Sometimes you can cut the power down to 50W =
and
things are ok.....for a while until the 12V gets lower and lower..!

Using a charger whilst operating on batteries, introduces hum from the
charger.

73

Bill, W=D8LPQ





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