[ICOM] Output power of my 706

[Mike Valentine - W8MM]

Chris,

Thanks for the tip. I always welcome learning something new.

You must have better batteries than I've used in the past.

I've used batteries for "mobile power boosters" wherein I had them connected
in parallel with a cigarette lighter power source (10 ampere rating) to
re-charge them between SSB transmissions during VHF rover contesting.  I
can't remember ever seeing a voltage during transmit of over 13 volts that
lasted for more than several seconds.

I was using a low internal-resistance 21 ampere-hour battery intended for
UPS service.

Cheers,

Mike

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Chris Mangus
Sent: Friday, December 15, 2006 8:45 AM
To: ICOM Reflector
Subject: Re: [ICOM] Output power of my 706

Hi Mike,

My station runs entirely on solar power and batteries, and has for
years.  My batteries never drop that low.  They usually stay at
13.1VDC.

If Steve's battery voltage is dropping that low then he is probably
exceeding the recommended / maximum discharge rate for his
battery(ies), or in other words, it's undersized for the job at hand.

I run an Icom IC725, 100w HF rig on 2 12v 110aH batteries in parallel.
 The rig pulls 1a in receive and 20a in transmit.

Chris / N7WBZ

On 12/15/06, Mike Valentine - W8MM <mike at valentine.org> wrote:
> Steve,
>
> You'll be lucky to exceed 12.2 volts under load from your battery.
> Lead-acid batteries can be charged to 13.X volts, even floated as high as
> 14.4, but when asked to deliver a high-current load they drop to under
12.5
> almost immediately.
>
> If you can supply full voltage from your Astron power supply, your problem
> will disappear.
>
> Mike - W8MM
>
> -----Original Message-----
> From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
On
> Behalf Of Paul Gates, KD3JF
> Sent: Wednesday, December 13, 2006 3:51 AM
> To: ICOM Reflector
> Subject: Re: [ICOM] Output power of my 706
>
> No such luck! Turning the power down! I suspicion it is the battery. It is
> just not holding 13.5 volts.I have a Astron Power Supply on the work table
> in need of repair!
> Paul
>
>
> XE1UFO <xe1ufo at gmail.com> wrote:  Hey: perchance did you turn the Power
Out
> down on the menu?
>
>
> >I tried it on ssb and cw every way I could think of. It seems when I
first
> >got the radio that on my watt meter that the needle would peak between 90
> >and 100 watts.
>
> Steve, XE1UFO
>
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