[TowerTalk] Lightning Protection via gas tube devices

Jim Lux jimlux at earthlink.net
Sat Jul 21 06:07:42 PDT 2012


On 7/17/12 11:46 AM, Larry Loen wrote:
> On the subject of lightning protection, is this sort of thing:
> http://www.l-com.com/item.aspx?id=21474  useful or advisable?
>
> Do I put one just at the base of the tower (and connect it to the
> tower ground system) or do I also have one next to the shack.
>
> I was looking into female-female SO239 type devices for use as the
> shack side ground for my coax (I'd have a connector box and then make
> sure the paired "SO239"s would then be grounded), but I wondered about
> this.
>
> The price isn't great, but what worries me more is the 0.4 dB
> insertion loss.  Or, is that at GHz frequencies only?
>

most of the time, the loss is at higher frequencies, and is a worst case 
guarantee.


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