Ken, I will agree with all until I got to the end of your post - "classic zepp" The original (and classic) Zepp antenna was a 1/2 wave wire fed through a 1/4 wave transmission line connected to the end that was trailed behind lighter-than-air aircraft (Zepplin). If you look at the J-pole, and turn it horizontally, you will see exactly the same thing - a 1/4 wave transmission line with one side connected to a 1/2 wavelength radiator.
I am not sure how the "Zepp" term became associated with any kind of center fed dipoles, but it has in ham circles, and I find it confusing - there is the Center Fed Zepp (2 halfwaves in phase) antenna, and then there is the Extended Center Fed Zepp (5/8 wavelength each side of center), and then there is the "classic Zepp" that is the antenna designed for trailing the aircraft. So we must be careful to explain which kind of Zepp antenna we are referring to when we write "Zepp" There is a lot of difference. 73, Don W3FPR On 3/9/2012 9:53 PM, Ken G Kopp wrote: > I have Varney's (G5RV) original article. The antenna was designed > for -only- 20M . Since then it's taken on the proverbial "life of it's > own" and become somewhat of a "cult" antenna, as is the case with > the "Carolina Windom". > > Why would one start with a perfectly good balanced-line fed Zepp, > cobble a piece of "special-length" coax onto the end of that balanced > line so that the antenna becomes something else, and then have to > use an antenna tuner to make the thing work? > > Since the antenna requires a tuner, why not connect the balanced line > to a balanced tuner ... or one with a balun ... and enjoy all the virtues > of a classic Zepp? > > 73! > > Ken Kopp - K0PP > [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 > ______________________________________________________________ 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
