[Elecraft] Open Wire Feed Line Arrestor

[Geoffrey Mackenzie-Kennedy]

Morning Ralph,

Thank you for sharing the information about these devices, very interesting!

I must confess that I have for decades used NEW sparkplugs with their gaps 
suitably set for the maximum peak RF voltage on the line, assuming a high 
VSWR, plus some, and with separate static drains placed elsewhere. The 
devices that you have found probably provide better protection and are 
certainly neater.

Knife switches and I have never got on very well!! I have always been wary 
of having to 'throw' a shack installed feeder switch in anger, probably 
because Murphy's Law states that this would be the moment when the antenna 
system gets zapped. But that's just one coward's opinion.

Good luck with the double extended Zepp.

73,
Geoff
GM4ESD


Ralph Tyrrell wrote on Friday, January 06, 2006 3:07 AM

> Still running my K1 (#1423) on inefficient low
> antennas.
> I have some trees that will give me good height 50-60'
> and orient the main lobe of a double extended zepp
> (14MHz) toward Oregon, take notice ECN.
>
> I have come across a device that will keep the antenna
> at near DC ground at all times.
>
<snip>
>
> Just wondering if anyone else has used this or a
> similar item and what comments might be made. Just
> trying to be save from lightning.
> I would also put a DPDT knife switch between the feed
> line and the K1 with BL2 to ground the feed line when
> not in use.
>
>