Except that last time I checked (a few years ago), Polyphaser's units were NOT
listed Antenna Discharge Units.
For example, the popular 098-10113G-A surge protector is not labeled as a
listed ADU. Nor is the fancier "HEMP tested" GPS band device.
Which PP products are listed devices?
On Sun, 14 Dec 2025 12:27:47 -0500, "Martin A. Flynn" <maflynn@theflynn.org>
wrote:
Whatever is selected, a valid UL listing is a must, and install it per
NEC 810 and the manufacturers instructions.
All of our commercial sites use polyphasers per the insurance underwriter.
On 12/14/2025 12:15 PM, wa9wsj via TowerTalk wrote:
73 Martin
W2RWJ
> Hello Gents,
>
> I've been asked to help with a vhf/uhf station installation. I was asked
> "what type, model etc of lightning arrester should I use"? The antenna is
> only a fiberglass dual band vertical and will not be above the tree tops.
>
> This gent lives in the mountains/forest of Idaho.
> I've never used one, I just disconnect coax when storms are predicted, but
> can't expect him to do the same.
>
> So, what are the prevailing thoughts/suggestions about this?
>
> Thanks so much!
>
> 73
>
> Tom wa9wsj
>
> Sent with [Proton Mail](https://proton.me/mail/home) secure email.
> _______________________________________________
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