[TowerTalk] UL listed protector for ladder line

[Jim Lux]

And, of course, those polyphasers aren’t a listed device.  At least not on PP website. They may have a version with the test pedigree and all.

Note that the government can waive a host of requirements.  I suspect that’s what happens with this sort of thing. 

On Fri, 13 Jun 2025 19:22:56 -0400, "Martin A. Flynn" <maflynn at theflynn.org> wrote:

Appreciate the tips and guidance - here's as much information as I'm
comfortable posting.

Station is located in a building owned by a unit of government, their
insurance vendor requires UL452 / UL 1449  listed protectors at the
entry panel that is common their their radio equipment.

All of the coaxial feed lines (theirs and ours) are protected by
Polyphasers at the entrance panel

Antenna is a W7FG dipole with ~ 100 feet of 450 ohm ladder line (14
gauge copper weld) , tuner is at the operating position.

The more I look at this, I'm leaning towards a recommendation of
scrapping the dipole and going to a 125' long wire and weatherproof /
outdoor tuner

73

Martin

W2RWJ


On 6/13/2025 6:54 AM, Martin A Flynn wrote:
> Have a situation where a UL listed protector is required on a ladder line feeder.
>
> I’m striking out in my search
>
> Any suggestions?
>
> 73 Martin
>
> W2RWJ
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