Re: NEC-LIST: CFA and the Hately advertisement

For years broadcasters have generally accepted 5/8 wavelength as the
optimum height for maximum groundwave. This is where the first
vertical lobe has just developed to the height of the main lobe.

Regards,
J.L. Smith

Duncan Baker wrote:
>
> If memory serves me right, some operators at HF prefer to use a
> so-called 190 degree mast (little over 0.5 lambda), in order to reduce
> the skywave component and to increase the ground range before one gets
> interference between sky- and groundwave at night. I do recall an
> article where the authors described a means of using toploading with
> stay wires (insulated) to get comparable results to the 190 degree
> tower with a 90 degree (lambda over 4) tower. The details are lost in
> my filing cabinets somewhere.
Received on Mon May 24 1999 - 15:22:42 EDT