Topband: FCP vs Gull Wing Elevated Radials

Richard (Rick) Karlquist richard at karlquist.com
Thu Jul 25 15:37:27 EDT 2019



On 7/25/2019 12:01 PM, Wes wrote:

> As to gull wing radials, Rudy Severns has looked at these too: 
> https://www.antennasbyn6lf.com/files/antenna_ground_system_experiment_5.pdf 
> Rudy's work is a treasure trove and I think I have everything he's 
> written in a folder on my hard drive.  Believe me, considering how 
> difficult it is to lay radials in my cactus patch, if I thought gull 
> wings would be useful I would have used them.  I don't.
> 

Rudy shows gull wing down only 0.65 dB and comments that "radically
changing the radial geometry does not seem to have a major impact".
So I don't understand your remark that gull wings are not useful.
The reduction in drive impedance can be mitigated by increasing the
height by about 3 feet.  I don't even have cactus but would never again
run radials on the ground now that Rudy has educated us.


Rick N6RK


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