I count three coils in the single coil Z Match. Also there is a hard to find two section variable capacitor. One of the coild has two taps. This is probably the reason that it has not been used in commercial matching networks recently. Willis 'Cookie' Cooke K5EWJ > --- On Wed, 7/15/09, [email protected] > <[email protected]> > wrote: > > > From: [email protected] > <[email protected]> > > Subject: Re: [Elecraft] The use of a doublet > > To: "Ron D'Eau Claire" <[email protected]>, > "'Phil LaMarche'" <[email protected]>, > [email protected], > "'.hank.'" <[email protected]> > > Cc: "'Elecraft_List'" <[email protected]> > > Date: Wednesday, July 15, 2009, 7:17 AM > > That should be VK5BR Lloyd Butler > > > > http://users.tpg.com.au/users/ldbutler/SingleCoilZMatch.htm > > > > David > > G3UNA > > > > ---- [email protected] > > wrote: > > > Can anyone point to why the single coil Z match > wasn't > > commercialised rather than the T match? (Perhaps > it's > > a historical thing and manufacturers just copy each > other, > > notwithstanding the Johnson Matchbox of course, which > is no > > longer produced.) > > > > > > I'm in process of building one to cover 160 to 10 > from > > VK2BR (?). I'm hoping that the link coupling will > help > > with "balanced" feeders and antennas, though one side > is > > bound to have more capacitance to earth than the > other, so > > "balanced" is fairly relative. > > > > > > David > > > G3UNA > > > > > > ______________________________________________________________ > > > 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 > > > ______________________________________________________________ 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
