One of the worst shocks I ever got was off the feedline on a big cubical quad in a blizzard. Made me forever respect static build up on antennas....
Alan, N3BJ ----- Original Message ----- From: "Bob - W5BIG" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, December 27, 2004 1:18 PM Subject: Re: [Elecraft] ESD and Storms > During a very light rain, with no accompanying lighting, there can be static > charge build up on an antenna. > I've seen sparks about 1/4 inch across a ground switch that wasn't quite > closed. > Also, wind alone can build up a static charge. > Rolling or unrolling coax can generate a static charge. I experienced damage > once with only a six foot length of coax. > > Always short a open transmission line before connecting it to your rig. > > 73/ Bob - W5BIG > > > > ----- Original Message ----- > From: "Dave G." <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Monday, December 27, 2004 11:07 AM > Subject: [Elecraft] ESD and Storms > > > > Just to add to the knowledge base... > > One misconception is that, if was no storm, there was > > no lightning... > > > > At one point in my career I had the fortune to do some > > work at NASA, and came across a nice piece of > > research concerning Clear Air Lightning. > > > > Lightning can and does occur on perfectly clear days. At > > MSFC (Huntsville,AL) there have been recorded in > > excess of 1000 CAL strikes in one day. !! > > > > Caveat !! > > > > _______________________________________________ > > Elecraft mailing list > > Post to: [email protected] > > You must be a subscriber to post to the list. > > Subscriber Info (Addr. Change, sub, unsub etc.): > > http://mailman.qth.net/mailman/listinfo/elecraft > > > > Help: http://mailman.qth.net/subscribers.htm > > Elecraft web page: http://www.elecraft.com > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
