Dick: Unless you are looking for something to do, I also suggest you are over concerned. During the recent CQWW CW on the island of St. Croix, we had 3 K3s all driving amps. We probably had 3 or 4 outages without incident.
Similarly, as a single op on the island of Montserrat during the last ARRL SSB, I had a K3 barefoot. Again, something like 3 or 4 power outages during the contest. No problems. Once that 12 volts into the K3 reaches its lower limit, the radio's off. "Shutting down properly during a power interruption" might be a different, and more difficult requirement, than just batter backup. 73 charlie, k1xx On 12/22/2014 2:51 PM, Richard Fjeld wrote: > Wow, thanks to all for the greatly informative answers. I gleaned > many good ideas from them. > > This is my concern; I am interested in protecting my K3 from damage by > not being shut down properly should a power interruption occur while > the K3 is operating. For this design, I'm thinking about a worst case > scenario; in transmit mode at 100 watts/20 amps, plus accessories on. > > I am concerned about Hydrogen gas while charging a lead-acid battery > here in the furnace room. Since I don't need to operate by battery > power, I'd like to know your thoughts about if a Gel-Cel battery of a > 9 amp variety would handle the 20 amp load until I could go to receive > mode and properly shut down? > I haven't had any experience drawing that much amperage from a gel-cel > momentarily. I don't know if the load voltage would be adequate to > keep the K3 alive. I'd need to test it using an older style radio. > I'm hoping someone has had experience related to this. > > Thanks in advance for comments, > > Dick, n0ce > > > On 12/22/2014 1:31 AM, Richard Fjeld wrote: >> Is anyone floating a battery across their power distribution? >> >> Dick, n0ce >> >> > > ______________________________________________________________ > 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 > Message delivered to [email protected] > ______________________________________________________________ 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 Message delivered to [email protected]
