> On Oct 30, 2018, at 12:50 PM, Fred Jensen <k6...@foothill.net> wrote: > > Does my K3 have a static bleed across the antenna terminal(s)?
Yes. Wayne N6KR > A number of years ago, our CQP team in Alpine County fried the front end of > an IC-760 II in a snow storm [precip static]. Then, with an accumulated 300 > or so years of amateur radio experience on the team, we replaced it with a > spare ... and fried that one too. [:-) I have a coax Tee with a 100K > resistor in a PL259 on my K3, just wondering if it's necessary. > > 73, > > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > On 10/29/2018 8:08 PM, Wayne Burdick wrote: >> Every year, especially in summer, our techs see radios come in that have >> been damaged by lightning, despite the radio's protective circuitry. You can >> take steps to reduce your own risk. >> >> 1. Many of us remember to disconnect antennas when lightning is anticipated. >> But in our experience, the most common source of damage, by far, is from an >> attached computer. Computers themselves often fail due to lightning strikes. >> They can also act as conduits for surges to other gear. Just to emphasize >> this point: Customers often say "I disconnected everything but the USB cable >> to the computer...," which left the interface to their radio exposed. >> >> Note: Only in rare cases have we seen surge damage via other I/O ports >> (accessory jack, paddle/keyer jacks, PTT IN, KEY OUT, and DC). USB and RS232 >> ports are the most susceptible. >> >> 2. Some stations have an ad-hoc ground system and little or no ESD or surge >> protection. If you haven't already taken protective measures, we strongly >> recommend reading this article, which goes into some detail regarding how >> lightning finds its way in: >> >> >> http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/June2017/Chusid-Morgan.pdf >> >> At the very least, be sure your PC and other gear share a short, heavy, >> common ground. >> >> 3. As for protecting your PC, here's a good starting point: >> >> https://www.wikihow.com/Protect-a-PC-in-a-Thunderstorm >> >> 73, >> Wayne >> N6KR >> > > ______________________________________________________________ > 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 n...@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 Message delivered to arch...@mail-archive.com
