[NLRS] 2 meter antenna elevation

[Dr. Gerald N. Johnson]

Might help, might not. Might not help enough to detect. It would help 
more if the elevation beamwidth of the beam was less than 10 degrees, 
but that takes a 2m yagi with at least 50 feet of boom which is a bit 
willowy anyway.

There was a presentation and paper at 2010 CSVHF and as I recall the 
conclusion was that for ordinary beams there was no computable or 
measurable benefit to beam elevation. That the refraction grating effect 
of the antenna being many wavelengths above ground and its image already 
provided the elevation and that pattern is much narrower than the free 
space elevation pattern of the beam but within a fraction of a dB of the 
peak of the elevation front lobe.

73, Jerry, K0CQ

On 7/24/2011 11:56 AM, W9RPM wrote:
>
>
> Hi, I have a question to pose to the group. I have 400-550 ft bluffs
> that run to the NE-E-SE of me. These are anywhere from 3/4 to a mile to
> the east, and then a little more as you go North or South. I am in La
> Crosse down in the valley. I am curious as to what if any benefit
> elevating my antenna say 10 degrees or so on the tower. It is between my
> 80 and 40 m antennas, so a EL Rotor would not help. This would be fixed.
> Any thoughts on the Pro's and Con's of this. Thanks, John W9RPM
>