[Elecraft] EFHW

[K9MA]

Well said, Bill!

73,

Scott  K9MA

On 2/9/2017 10:39, Bill Leonard N0CU wrote:
> The reason your antenna was a lot less finicky with a bit of coax is that the
> EFHW antenna requires a return path for the RF field. Theoretically, without
> a return path, the antenna won't radiate at all. The recommended setup for
> this antenna is for a .05 wavelength counterpoised to be used. EZNEC models
> indicate that there is little benefit to going much longer than .05
> wavelengths, and a quarter wavelength is actually less effective than the
> shorter lengths.  If no counterpoise is used, then coax shield becomes the
> counterpoise by default.
>
> Bill  N0CU
>
>
>
>


-- 
Scott  K9MA

k9ma at sdellington.us