No, many of SOTA activators have used a KX3 below freezing. We just haven't used one at -30C (-22F) like you originally mentioned.
73, Barry N1EU On Wed, Mar 30, 2016 at 11:02 AM, Igor Sokolov <ua9...@gmail.com> wrote: > Thanks Brendon,Bob and Kevin. I am not worried about batteries. My LiFePo4 > were tested at minus 20 C and the drop in capacity is insignificant. Looks > like nobody tested K3 or KX3 at below freezing temperatures so I will have > to be the first :) A bit scary... > > 73, Igor UA9CDC > ----- Original Message ----- From: "Brendon Whateley" < > bren...@whateley.com> > To: "Igor Sokolov" <ua9...@gmail.com> > Cc: "Elecraft Reflector Reflector" <elecraft@mailman.qth.net> > Sent: Wednesday, March 30, 2016 6:50 PM > Subject: Re: [Elecraft] Operating temperature range ( second attempt) > > > > Hi Igor, >> >> I think that some have operated at low temperatures in some winter >> competitions -- the US North East gets pretty darn cold -- similar to what >> you are talking about. I looked and easily found similar questions to >> yours, but no answers! >> >> The two things I'd be concerned about are the batteries and any >> electrolytic components that may be damaged by extreme low temperatures. >> The LCD screen will also stop working at low temperature, but I've never >> broken one by freezing -- but perhaps I was just lucky! >> >> I think batteries will have issues before most of the electronics. I'd >> suggest building a small insulated (expanded foam?) enclosure to hold the >> radio and battery. You could then stick some chemical hand warmers into >> the >> container and keep everything at a reasonable temperature. Look at how the >> "space balloon" people do things, they may have some tips. Alternatively >> keep the batteries in an inside pocket of your clothing. >> >> An email to the Elecraft guys may give some guidelines for temperatures >> that may damage components... but apart from those, I'd just give it a >> try! >> >> Good luck and let us know what you find out, so that we can answer the >> question next time it comes up. (I live in California at the moment and >> our >> harsh winter temperatures barely touch freezing at night!) >> >> - Brendon >> KK6AYI >> >> On Tue, Mar 29, 2016 at 9:20 PM, Igor Sokolov <ua9...@gmail.com> wrote: >> >> There were no responce to the initial message so I post it again: >>> >>> I have both K3 and KX3 and I sometimes use them outside in a field >>> operation. Here in Russia we have one funny QRP contest called "Frost-red >>> nose" where extra points are given for low temperature environment during >>> field operation. The contest happens in January when in some places >>> temperatures can be down to minus 30 C. I did not find temperature >>> requirements for K3/KX3 in the specs. Can somebody give me a hint or may >>> be >>> share own experience. What would be the lowest temperature where the rig >>> will still perform adequately? >>> >>> 73, Igor UA9CDC >>> >>> ______________________________________________________________ >>> 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 >>> Message delivered to bren...@whateley.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 > Message delivered to n1eu.ba...@gmail.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 Message delivered to arch...@mail-archive.com
