If it's a low power or receive only application that might be ok.
Also, one should assume a worst case mismatch, so double the voltage. And
that's a kW CW (or constant envelope - FSK RTTY, for instance)
I suspect this is why in the "good old days" they'd use a double spark gap (I
believe there's one in the handbook or the ARRL Antenna book). You could adjust
the spacing.
That also makes getting a UL listing tricky - I'm not interested in forking out
$300 for UL 452, but I'll bet there's some words in there about design voltage,
etc.
On Fri, 13 Jun 2025 14:34:18 -0400, Ken WA8JXM <wa8jxm@gmail.com> wrote:
Not very well. The voltage on a matched 50 ohm line at a KW is only 223v.
On an open wire line presenting 2000 ohms at the arrestor, the voltage is
1400v.
Ken WA8JXM
On Fri, Jun 13, 2025 at 9:29 AM john simmons
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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