Re: [TenTec] Ten Tec Vee Beam?

[Ken Brown <ken.d.brown@verizon.net>]

> Omitting the resistors and substituting a quarter wave stub is not the same
> thing.  In order for a Vee beam to be unidirectional, you have to terminate
> the ends in the characteristic impedance of the wire.  For lengths longer
> than two wavelengths, the characteristic impedance is about 500 ohms.  So
> you put a 500 ohm resistor to ground.  If you don't have a good ground, you
> can use a 500 ohm resistor to a quarter wavelength counterpoise.
And a quarter wave stub, or a quarter wavelength counter poise are only 
a quarter wave on one band. Maybe it will also work on another band 
where is is 3/4 or 5/4 wavelengths. Resistors to a good ground will make 
the antenna unidirectional over several bands. Quarter wave 
counterpoises may work for 40 and 15 with just one wire per counterpoise.


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