Topband: Radials on ground v FCP

[Richard (Rick) Karlquist]

On 1/10/2022 10:42 AM, Kenny Silverman wrote:
> N6BT’s ring is pretty flexible in its dimensions. It can be 3 or 4 sides (or anywhere in between) and can handle some variation in symmetry.
> 
> I’ve been having issues finding a solution to the high tree attenuation on my property and I had an inverted L with the ring and another inverted L 340’ away with 60 x 100’ radials.  The model showed there was some interaction between the 2 antennas so exact difference was not known. But basically the ring was very close to the 60 radial version.
> 
> One of the key issues is making sure the inverted L section is close to resonance. If it’s short, more current is moved into the ring which is not desirable.
> 
> Regards , Kenny K2KW
> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
> 

Actually, you are kidding yourself making the inverted L long enough to 
be resonant.  That has the effect of moving more current into the 
horizontal part of the inverted L, which is also not desirable.  The 
solution to this dilemma is to use a top loaded (T type) vertical, and a 
loading coil if necessary.  The resonant inverted L is "elegant" but not 
optimal.

Rick N6RK