I agree re the charge controller. I use a kit-built one from CirKits. Model: SCC3. It is uber-RF-quiet being a linear cc, and can handle 20A.
73, matt W6NIA On Fri, 19 Apr 2013 10:30:57 -0500, you wrote: >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" <mzil...@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 >> > >> >______________________________________________________________ >> >Elecraft mailing list >> >Home: http://mailman.qth.net/mailman/listinfo/elecraft >> >Help: http://mailman.qth.net/mmfaq.htm >> >Post: mailto:Elecraft@mailman.qth.net >> > >> >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:Elecraft@mailman.qth.net >> >> 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
