[TowerTalk] UL listed protector for ladder line

[Jim Lux]

I have seen a strategy used in achieving compliance.

"Shall use a UL listed device" (and they don't call out a specific standard), then the implementation uses something with a standard that isn't necessarily appropriate, but is, in fact, listed.



On Sun, 15 Jun 2025 14:40:19 -0700, Jim Brown <jim at audiosystemsgroup.com> wrote:

On 6/15/2025 1:49 PM, Martin A. Flynn wrote:
> I asked our municipal POC to source a list of protectors that pass the
> insurance companies muster,  here's a link to what was provided https://
> www.polyphaser.com/Themes/polyphaser/Content/assets/pdf/INF-PP-UL497E-
> Flyer_V3.pdf
>
> We noted this is UL497E and not the UL452 (radio & television receiving
> equipment) / UL 1449 (surge suppression) that was originally called out,
> and were told this is the only option, and specifically "told not to
> press the issue".

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