On Sun, 7 Jun 2009 16:45:31 -0500, "Bill K9YEQ" <k9...@live.com> wrote:
I use a Power Gate and three large commercial backup batteries of the type used in server rooms. The Power Gate keeps them trickle charged. Tom, N5GE K3 #806, K3 #1055 XV144, XV432, KRC2 W1 and other small kits. http://www.n5ge.com >I use a Power Gate PGS40 with a GSM battery backup, same as UPS but cheaper >in terms of how long one can stay on the air, so the issues of what happens >when one loses power, here are none existant. I experience quite frequent >blips so power backup is important. > > >73, > >Bill >K9YEQ >K2 #35; KX1 #35; K3 #1744; mini mods >ATS-3B >-----Original Message----- >From: elecraft-boun...@mailman.qth.net >[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil LaMarche >Sent: Sunday, June 07, 2009 1:58 PM >To: 'wayne burdick'; 'Geoffrey Mackenzie-Kennedy' >Cc: 'Elecraft Discussion List' >Subject: Re: [Elecraft] K3 power sequencing > > >With the lightening in Florida, I have a very large UPS on all my equipment >and computers. > >Phil > > >Philip LaMarche >LaMarche Enterprises, Inc. >www.instantgourmetspices.com > >www.w9dvm.com >800-395-7795 pin 02 >727-944-3226 >FAX 727-937-8834 >NASFT 30210 > >K3 #1605 > >CCA 98 00827 >W9DVM > > > >-----Original Message----- >From: elecraft-boun...@mailman.qth.net >[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of wayne burdick >Sent: Sunday, June 07, 2009 2:23 PM >To: Geoffrey Mackenzie-Kennedy >Cc: Elecraft Discussion List >Subject: [Elecraft] K3 power sequencing > >The preferred way to turn off the K3 is via the POWER switch. Or, from a >computer, by sending a "PS0" command, then waiting at least half a second >later dropping the /POWER_ON line. > >You can turn the rig off at the power supply if that is unavoidable. >Just as with a "brownout," when the firmware senses a supply voltage dip to >9.5 V or lower, it shuts down everything as cleanly as possible. >But it may not have time to update all changed parameters in EEPROM (current >VFO frequencies, etc.). Thus when you turn power back on, you might find the >VFO in the last location you were at when you switched to the current band. > >I once tried turning my K3 off with at power supply several dozen times to >see if I could make anything bad happen. Nothing did. That said, do use the >preferred method if you can. > >73, >Wayne >N6KR > >On Jun 7, 2009, at 11:03 AM, Geoffrey Mackenzie-Kennedy wrote: > >> Joe, >> >> Many thanks for your help. >> >> I had been toying with the idea of buying a K3 for use at another QTH, >> but there the mains supply is not 100% reliable. If bad things can >> happen if the 13.8V supply shuts down as the result of a mains outage, >> that is serious. >> >> 73, >> Geoff >> GM4ESD >> >> >> Joe Planisky wrote on Sunday, June 07, 2009 5:45 PM >> >>> From the owners manual (page 44 in rev D2): >>> >>> "Remote Power On/Off >>> >>> A remote-control system can pull the POWER ON line to ground (ACC >>> connector, pg. 18) to turn the K3 ON. To turn it OFF, the controller >>> must send the K3 a "PS0;" remote-control command via the RS232 >>> interface, then deactivate the POWER ON signal. This sequence >>> ensures that nonvolatile memory is updated correctly before >>> shut-down." >>> >>> Note that it doesn't say how long it takes to update the NVRAM after >>> the above process is completed. In other words, how soon after >>> deactivating the POWER ON signal can I shut down the 13.8V supply? >>> >>> 73 >>> -- >>> Joe KB8AP >>> >>> >>> On Jun 7, 2009, at 9:10 AM, Geoffrey Mackenzie-Kennedy wrote: >>> >>>> >>>> Is there any interface available on the K3 which would allow an >>>> external automatic protective shutdown system to meet this >>>> requirement, rather than having to press the POWER button by hand? >> >> ______________________________________________________________ >> 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 >> >> > >--- > >http://www.elecraft.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 > >______________________________________________________________ >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
