[Elecraft] Field Day experience with K3

[Adrian]

Why dont you FD guys take a 2v battery and series it with the 6 cell 
12.8v LA battery that you usually use, matching the ah ratings.

  I use a 7 X 2v lead-acid cell backup battery system in my 15.2v power 
supply system.
In a power failure I have 14.6v available.

On 28/06/2012 18:07, Peter Wollan wrote:
> The problem here isn't the battery AH capacity, but the voltage
> supply.  It could be dropping below 10 vdc because both radios are on
> the same supply, or because the power supply wires are too fine gauge,
> or because the battery is defective.
>
> The K3 is less robust to supply voltage than the other Elecraft
> radios.  The K2 is rated for 10-15 volts;  the K1, KX1, and KX3 go
> down a lot lower, I think 8 volts.  I looked at the K3 documents to
> see what minimum voltage it requires, and I couldn't find it -- I
> think it's something like 11, but it may be 11.5 or even 12.
>
> You'd probably do fine just by using a separate battery for each
> radio, and not letting it run down too far.  A voltage booster isn't
> needed, as lots of operators all over the world have demonstrated.
>
>        Peter W0LLN
>
>
> On Thu, Jun 28, 2012 at 12:19 PM, John Kountz<john at t6ee.com>  wrote:
>> ...  In tandom
>> operation, the Eagle was not affected by momentary voltage dips (below 10
>> VDC) whereas the K3 would shut down.
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