[TowerTalk] UL listed protector for ladder line

[Ken WA8JXM]

Resonance does not really change antenna performance.  Feedline
performance, transmitter matching, yes.  Antenna performance, no.You would
have trouble convincing me that a double extended zepp (!.28
wavelengths long), with more than 3 dbd gain over a dipole performs worse
than a dipole

Most AM broadcast antennas are not resonant.  The most powerful AM
broadcast station ever in the U.S. originally operated with a 831' vertical
, about 0.6 wavelength.  It was later reduced to 747' and then 736', all
non resonant frequencies.

Ken WA8JXM

On Sun, Jun 15, 2025 at 9:36 PM <john at kk9a.com> wrote:

> Besides it being easier to find a certified protector for 50 ohm coax,  a
> resonant dipole or a fan dipole fed with coax will have a nicer pattern and
> perform better than the W7FG dipole with ladder line on non-resonant
> frequencies.
>
> John KK9A
>
>
> Jim Brown K9YC wrote:
>
> And, as noted, they won't work for your chosen antenna, for the reasons
> noted. You should probably pursue one or more of the options for
> antennas that are relatively well matched to coax on their operating
> frequencies.
>
> 73, Jim K9YC
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>