I did a study of bandwidth vs diameter and there are 3 results:
1. Bandwidth increases fairly slowly with diameter.
2. No practical diameter is going to cover 3.5-4 MHz with a
fixed match.
3. Making the antenna fat lowers the radiation resistance, and
increases ground losses.
I'm going to stick with my 3 inch irrigation tubing, which is
3 inches mainly for mechanical reasons.
Rick N6RK
w8zn@comcast.net wrote:
>
> Hi all,
>
> To those running 80m 4 squares, what kind of bandwidth do you typically see?
> Is it about the same as a typical dipole or 1/4wl sloper? Does anyone know if
> using a larger radiator (such as Rohn 25 vs 3"/4" irragation pipe) gives
> broader bandwidth or is the diameter to wl ratio just too small to make any
> diff?
>
> thanks!!
>
> Terry
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