I think I've mentioned this here before, but I actually *do* have a battery backup system in my shack and also operate using 12V in my travel trailer. The home system has a 90AH 12V AGM battery, continually charged with a HB "smart charger" and the trailer uses a pair of deep-cycle RV batteries with a similar charger. An EU2000 Honda is also used if necessary.
That said, in both cases I use a boost regulator to maintain a minimum of 13.8V AT THE K2 INPUT. Since, IMHO, a boost regulator is always a good idea, it could just as well boost to 24 or 30 or whatever voltage a cleaner transceiver would require. Wes N7WS --- On Thu, 4/15/10, Phil Kane <[email protected]> wrote: > From: Phil Kane <[email protected]> > Subject: Re: [Elecraft] Ten Tec never sounded so good! > To: "Wes Stewart" <[email protected]> > Cc: "Elecraft Reflector" <[email protected]> > Date: Thursday, April 15, 2010, 11:56 AM > On 4/15/2010 8:25 AM, Wes Stewart > wrote: > > > For the life of me I can't understand why radios > continue to be > > designed around an automobile storage battery when > fewer than 1% > > will ever operate in a mobile environment. > > For those of us who insist that our communications > gear operate > when the mains power goes off, the 12V DC battery > system is the > most reasonable backup. Few if any of us have > the resources to > install a commercial 48V battery system - > which is the > commercial standard currently - or the 40 KW backup > generator > or solar array which is what is needed (but don't > have) to run > my house "off the grid". > > For communications backup purposes we don't use > "automobile > storage batteries" which are designed for a large > current draw > for a short time (engine cranking) and relatively > little current > draw afterward while the alternator picks up the > load. Deep-cycle > totally sealed batteries are the standard for > communication > backup systems of this capacity. > > My engineering firm designs commercial communication > sites > primarily for the public safety community and such > backup > power systems are a very important part of what we > do for our > clients. > > -- 73 de K2ASP - Phil Kane > Elecraft K2/100 s/n 5402 > > ______________________________________________________________ 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
