I was using a serial port protector made by Tripp-lite when I lost my second KIO3A, but the wire connecting my computer to a single-point ground had come adrift, and several people commented that this probably caused the failure. On the other hand, I have been using serial-port controlled radios for 15 years at this QTH, and never had sucha failure - perhaps the transceiver chips in those radios are just made tougher.
73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 and arcluster.reversebeacon.net, port 7000 On 5/24/2012 10:29 AM, VE3GNO Daniel wrote: > Hi > I tried to use serial port isolator with 5 wires to get better > lightning protection. I have 5 of these > http://www.ebay.ca/itm/RS-232-serial-port-photoelectric-isolator-/140677527776?pt=LH_DefaultDomain_0&hash=item20c108b8e0 > > <http://www.ebay.ca/itm/RS-232-serial-port-photoelectric-isolator-/140677527776?pt=LH_DefaultDomain_0&hash=item20c108b8e0> > with 5 wires dc separation. With my FT5K worked fine but for some > reason with K3 is not working. I should investigate closer the root > cause, maybe levels or maybe something else, that sounds like a plan > for the next "electrostatic" season. THe idea to get separation on > serial port makes me feel safer when comes to lightning. > 73 > VE3GNO Daniel > *From:* Pete Smith N4ZR <[email protected]> > *To:* Elecraft List <[email protected]> > *Sent:* Thursday, May 24, 2012 9:43:30 AM > *Subject:* [Elecraft] Improved KIO3A Immunity to EMP > > Is this problem on anyone's radar screen at Elecraft? We're in > lightning season again, and while I've done everything I can think of, I > live in fear of another U1 failure. > > -- > 73, Pete N4ZR > The World Contest Station Database, updated daily at > www.conteststations.com > The Reverse Beacon Network at http://reversebeacon.net > <http://reversebeacon.net/>, blog at reversebeacon.blogspot.com, > spots at telnet.reversebeacon.net, port 7000 and > arcluster.reversebeacon.net, port 7000 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] <mailto:[email protected]> > > This list hosted by: http://www.qsl.net <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
