Here's what Google's AI says: Specifically, UL Standards address:
Antenna Discharge Units: UL 452 covers these units, also known as lightning
protectors or surge arresters, designed to protect radio equipment from surges
caused by lightning.
73,
Steve
N6SJ
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Chris Perri
Sent: Friday, June 13, 2025 7:54 AM
Cc: Tower and HF antenna construction topics. <towertalk@contesting.com>
Subject: Re: [TowerTalk] UL listed protector for ladder line
Morgan products are not UL listed. Some of Polyphaser’s products are; I have
no idea if they have a balanced line arrestor. I’ve never seen one.
Chris
KF7P
> On Jun 13, 2025, at 8:21 AM, Robie Elms <ruler55@gmail.com> wrote:
>
> Martin,
>
> Here's a link to Morgan's open wire line arrester # 309
>
> https://www.surgestop.com/coaxial-arrestors/m-309.html
>
> I do not know if this is a "listed" product per the NEC. Please let
> us know what you find out.
>
> Robie AJ4F
>
> On Fri, Jun 13, 2025 at 8:33 AM john simmons
> <jasimmons@pinewooddata.com>
> wrote:
>
>> Would it fly to use two UL-listed coaxial lightning protectors? I
>> doubt you'll find what you are looking for.
>>
>> -John
>> On 6/13/2025 5:54 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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