[Hallicrafters] inverted V

[K6JEK]

Folks,

I think we have an apples and oranges conversation going on here.  The 
1.5 dB difference compared to a dipole rule of thumb is not about loss, 
it's about radiation pattern.   At a half wavelength above ground, a 
dipole is a more directional antenna, with a deep overhead null and and 
a reasonably low radiation angle -- 30 degrees.  The inverted V has 
slightly more radiation going straight up and slightly less going out 
at 30 degrees.  That's not loss.  That's signal going up instead of 
out.  At lower heights, the dipole does not have the deep null and the 
two antennas are just about equivalent -- high angle omni-directional 
antennas. The analysis is for an inverted V with a 90 degree apex 
angle.

Boiling it down.  There is no noticeable difference between a low 
dipole and a low inverted V.    If you can manage one tall support, a 
high inverted V is better than a low dipole.  If you can manage two 
high supports, a high dipole is better than a high inverted V but not 
much.  Don't put up inverted V's with narrow apex angles.  They start 
acting like feedlines.

Jon

  On Feb 22, 2005, at 5:22 AM, Dan Cotsirilos wrote:

> Any ant experts out there? I read a article that a inverted V on 80 
> meters loses about 3 db gain over a dipole. Does anyone know that if 
> this is the same on 10 meters? thanks Dan
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