[amsat-bb] Re: Voltage Requirements of ICOM IC-910H

George Henry ka3hsw at earthlink.net
Sun Jan 21 09:44:56 PST 2007

The power requirements specified in the 910H manual are 13.8 VDC +/- 15%, 
which is 15.9 V on the high side.  I would not feel comfortable running mine 
at that level, however.  I would suggest putting a couple of 100A diodes in 
series with the + side of the power lead to drop it down closer to 13.8.... 
(2 would drop it to about 14.5, which is close to what you might encounter 
in a car with the engine running)

73 de KA3HSW

----- Original Message ----- 
From: "Michael Hatzakis Jr MD" <lists at hatzakis.net>
To: <amsat-bb at amsat.org>
Sent: Saturday, January 20, 2007 2:25 PM
Subject: [amsat-bb] Voltage Requirements of ICOM IC-910H

>I am changing my supply for my ICOM IC-910H because my PS-30 is dying.  I
> have an SGC PS-50 supply that is not regulated, per se, it is a huge 
> supply
> with massive transformers.  It appears to work fine, but I am worried 
> about
> the fact that is starts at 16v or so.
> Specifically, is 15.5 to 16v too high to safely run this radio and is a 
> drop
> of 1-1.5 volts too much unregulation for proper operation?
> Michael  K3MH
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