[Icom] Battery Operation

[Dean Norris]

At  14:30 6/13/2003, William Lambing wrote:
>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=
=20
>to FM...and on and on.  Listen to Midcars or ECARS someday while some of=20
>these guys, mobile, with the engine shut off attempt to contact=20
>someone.  95% of the time, they are completely unreadable.  Now if you run=
=20
>CW...then all bets are off..!  This mode usually works just great.  It is=
=20
>the SSB peak output that gets you in trouble.  Sometimes you can cut the=20
>power down to 50W and things are ok.....for a while until the 12V gets=20
>lower and lower..!
>
>Using a charger whilst operating on batteries, introduces hum from the=20
>charger.
>
>73
>
>Bill, W=D8LPQ


I have the IC760MkII and try to run it from my camp trailer=20
batteries.  Even when fully charges at 12.8 v or so, it sounds bad on=20
SSB.  As the voltage drops, it gets worse.  Sounds fine at 13+ and up.

Sure takes the fun out of hamming from the camp sites. I know there is a=20
device that inputs 12.6 and less and boosts it to 13.6.  I may have to look=
=20
into it.

Dean