I had a pic in mine so it wouldn't let me send it.
IS-50UX-C0. They make them in N connector as well. I have been struck in
Florida while on the radio of this. The radio survived. Needless to say, the
antenna was all over the neighborhood.
33 years in telecom and they were on every cell site we built.
Dave Calder
n4zkf@n4zkf.com
dxc.n4zkf.com 7373
www.n4zkf.com
n4zkf/r 147.375 103.5
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Jim Lux
Sent: Monday, December 15, 2025 3:02 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] lightning arrester suggesstions
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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