The 5% rule works when tested by making and cutting , I did it years ago and anything less than 5% causes a failure to tune and match ( but out to 10 % or so still works )
To: [email protected] From: [email protected] Date: Sun, 21 Feb 2010 23:57:32 +0000 Subject: [Repeater-Builder] re: Ground Plane 5% Radiator Length Rule > "Jeff DePolo" <j...@...> wrote: > At the risk of offending someone somewhere, the fact that > the ARRL cites the "5% rule" without backing it up with the > analysis behind the rule doesn't really suprise me... > > Think about it this way. If you made a dipole, would you cut > one side 5% longer than the other? > > Why not make the vertical radiator 5% longer, and leave the > radials exactly a quarter-wave, thereby saving on materials? > > You know I'm not taking a dig at you Chuck - I'm just waiting > (hoping) that someone comes up with some real evidence to back > up the 5% rule. > --- Jeff > > > Various ARRL publications cite the 5% longer "rule." Right or > > wrong, who > > knows? > > > > Chuck > > WB2EDV > _________________________________________________________________ Find a great deal on your next car. Get straight to the Point. http://clk.atdmt.com/NMN/go/157637060/direct/01/
