[Elecraft] Solar Power for KX3

[Gerald Manthey]

The key here is a good charge controller. I use a mppt controller and it is
98 % efficient. Gets 30% for charge. Has 3 different charge rates and
handles all battery types.
My RV is also wind turbine and solar powered. I have 560 watt solar to my
mppt charger, then to my 900 amp hr battery bank. At night the wind turbine
(600 watts) takes over and charges my battery bank. ( aw living off the
grid. )

On Apr 19, 2013 10:07 AM, "Matt Zilmer" <mzilmer at verizon.net> wrote:

> I'm using two solar setups.  One is a 100W system for the K3 and KX3 /
> ham station generally.  That's probably not going to interest anyone
> for portable ops with the KX3.
>
> Five or so years ago, I bought 80 4.5-inch wafers from a 2nd tier
> outfit in New England.  From these, I built two panels that supply 21V
> with no load, and output is about 18W each.  The panels were designed
> to strap on the rear of a backpack and they're about 16" x 28".  I've
> used them only a few times as this transport arrangement is a bit
> clumsy and maneuvering is difficult with that type of unwieldy
> backpack load.  Now I only use them when I drive the operating
> location.
>
> I would recommend some of the more modern roll-up amorphous silicon PV
> modules.  I've seen them at Field Day, but don't have any brand names.
>
> 73,
> matt W6NIA
>
> On Thu, 18 Apr 2013 16:28:52 -0400 (EDT), you wrote:
>
> >Rather than reinvent the wheel, does anybody have experience or
> suggestions for a small solar array sufficient to keep a KX3 with internal
> batteries going during daylight? I would assume 10 watts average over a
> reasonable TX duty cycle would be enough.? Something strong enough or
> flexible enough to withstand packing for air travel would be desirable.
> >
> >
> >73?? -? Jim?? K8MR
> >
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