-=> On -Fr-Ja  98 21, Stan Black said to All,<=-
-=>"About antennas...,"<=-
 
 SB> Hello to the Group!
 
Hi, Stan;
 
 SB> Here's the question of the week....Other than the fact that a j-pole
 SB> looks so neat on your tower, What is the real benefit of it?
 SB> I have always been told that odd multiples of a 1/4 wave required no
 SB> special  matching sections when built over a 1/4 wave radial. 
 SB> To prove this to myself, I built a 3/4 wavelength over 1/4 wave
 SB> radials  (drooped 45 degrees) and it matched VERY good!  
 
I would expect it to be a good match.
 
 SB> Will the same apply to a 5/4 wavelength version?
 
I would guess that you would get a good match.
 
 SB> If so, how much gain can I  expect?
 
I doubt your gain would be more than 3 dB or so, because you have fields
canceling each other.  You would be better off with a co-linear 5/8 wave
with a 1/2 wave matching stub, (J) and a 1/4 wave phasing stub between
the elements.  This will give you a good 6 dB gain compared to a 1/2 wave
dipole.
 
 SB> Thanks for all responses!
 
My pleasure.
 
 SB> No, I can't afford an ARRL antenna handbook! hi hi hi! :-)
 
Neither can I, but it's a great resource!
 
73 ES Happy QSOs in '98 to KC5BFA DE KB9QPM
   Ivy
 
 
 
... Antenna... Isn't that Uncle Harry's wife?
 
    --
 
           ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
           ³  SysOp: Ivy's WALL BBS - 6 Networks 920-457-9255  ³
           ³             IMHO: 5 WPM for EVERYONE.             ³
           ³           KB9QPM/AE as of 11/19/97 :->>           ³
           ³Happy New Year to All! May the band always be open!³
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