Ha, ha! A simple check is to terminate the TX in a dummy load, then add the choke and see if the SWR changes significantly on any of the bands where you might transmit.
73, Ron AC7AC -----Original Message----- From: hawley, charles j jr [mailto:c-haw...@illinois.edu] Sent: Sunday, September 09, 2012 9:04 AM To: Ron D'Eau Claire Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna static charge precautions - any tips? I'll keep an eye on it :) Sent from my iPhone On Sep 9, 2012, at 10:53 AM, "Ron D'Eau Claire" <r...@cobi.biz> wrote: > Many antenna systems do not require this protection. They are shunt > fed which provides a direct-current short across the feed line at all times. > > Chokes may work fine, but all chokes have some parasitic capacitance > across the windings which means they have a series resonances > somewhere across the RF spectrum. At those points the choke will > greatly disturb the impedance presented to the rig and absorb RF, even to the point of catching fire! > > 73, Ron AC7AC > > 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
