G'day! I use 6 x 2.2V, 250AH Gel Cells in parallel with my 30A linear power supply to run my K3. The battery sets float voltage happens to be 13.8V so all is good. I have another set of gelcells here which runs my 150W output 2m linear amplifier and which is floated by a separate power supply. I also have 2 x 12V deep cycle wet cell batteries here but they are used more for portable ops as they are considerably lighter than the gelcells. (The gelcells weigh about 23Kg each!) I don't use or need diodes anywhere to be able to run this setup.
73 de Jeff Cochrane - VK4BOF Elecraft K3 #4257 + PR6 + K144XV + KPA500 #161 = Fanbloodytastic performance! ----- Original Message ----- From: "kf4clo" <kf4...@hotmail.com> To: <elecraft@mailman.qth.net> Sent: Thursday, August 18, 2011 8:12 AM Subject: [Elecraft] K3-Front panel shut down question. > My K2 is set up with a power supply to the 100w connection and a battery to > the low power connection, > If commercial power cuts off without warning(and it does sometimes)the K2 > stays on with battery power. > I am looking for a way to do this with my K3 so I can at least shut down > from the front panel when this happens. I understand the K3 don't like it > when shutdown other than the front panel. Maybe a battery between the power > suppley and the K3?(or is there a better way). > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-Front-panel-shut-down-question-tp6697413p6697413.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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
