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" <[email protected]> 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 > > > >______________________________________________________________ > >Elecraft mailing list > >Home: http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/mmfaq.htm > >Post: mailto:[email protected] > > > >This list hosted by: http://www.qsl.net > >Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
