[TowerTalk] UL listed protector for ladder line

Martin A. Flynn maflynn at theflynn.org
Fri Jun 13 19:22:56 EDT 2025


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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