Thanks Don. 73, Igor UA9CDC
> Igor, > > Looking at the Elecraft website for K3 Mods and application notes, it says > "*About 09/01/09 (RF board Rev H3) and later." > *The serial number is difficult to track because of the difference between > kit-built and factory assembled K3s. The ship date is the most > significant tracking method for mods that are included. > > When in doubt, consult www.elecraft.com. > > 73, > Don W3FPR > > Igor Sokolov wrote: >> Starting what serial numbers please. >> >> 73, Igor UA9CDC >> >> >>> All New K3s for some time have had this change made at the factory >>> before they ship. >>> >>> 73, Eric >>> >>> >>> On 3/8/2010 4:04 PM, Brett Howard wrote: >>> >>>> http://www.elecraft.com/K3/mods/K3%20rx%20protection%20mod,%20rev%20B.pdf >>>> >>>> That document explains a mod that you should definitely make sure is >>>> in place in your radio if you're worried about this condition. I had >>>> one of Q8 and Q9 blow in my radio after too much power came back in >>>> from another operator who told me he *WAS* staying off of 20 meter >>>> like to told him to do he was down on 14 meters! ;) Anyway we >>>> replaced the Q and the rig came back to life. But if you view that >>>> document it says that when you get to +13 to +20dBm it will >>>> automatically engage the preamp for you. +20dBm is 100mW so that >>>> would at least give you an added 10dB of protection on your way up to >>>> the 1-2W realm. >>>> >>>> ~Brett (KC7OTG) >>>> >>>> >>>> >>> ______________________________________________________________ >>> 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 >> >> ______________________________________________________________ >> 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 >> ------------------------------------------------------------------------ >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: >> 271.1.1/2730 - Release Date: 03/08/10 02:34:00 >> >> ______________________________________________________________ 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
