[TowerTalk] UL listed protector for ladder line

Jim Brown jim at audiosystemsgroup.com
Sun Jun 15 17:40:19 EDT 2025


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



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