Thank you Bob... -- 73's, and thanks, Dave For software/hardware reviews see: http://www.nk7z.net
For MixW support see: https://groups.yahoo.com/neo/groups/mixw/info For SSTV help see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Tue, 2016-02-09 at 14:28 -0600, Bob McGraw K4TAX wrote: > Yes, insulation does in effect cause the electrical length to change. > > Case and point, construct a 1/2 wave antenna using insulated wire, > put > it up and determine the resonant frequency or point where the SWR is > 1:1. Then take it down, carefully strip off the insulation and put > it > back in the same place. Make the same measurements to determine > resonant frequency or point where the SWR is 1:1. You'll find it > changed due to the K factor contributed by the insulation. > > 73 > Bob, K4TAX > > > > On 2/9/2016 1:46 PM, Dave Cole wrote: > > Hi Jim, > > > > I have been reading about your exploits with THHN, and the 100 to > > 50 > > ohm change caused by the insulation... > > > > I am going to pick some up today and wind a choke using it, (as > > opposed > > to enameled 14 GA copper), to see just how close to 50 ohms it will > > come... Any last minute tips? > > > > BTW, thanks again for publishing all of your work! > > > > > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
