[TowerTalk] grounding elevated vertical for lightning?

[Jeff Blaine]

Static bleed is not an issue here, sort of.  The antenna is grounded through 
the antenna switch which has a 50 ohm load on the line when it's not 
selected (unless that's been zapped).  And when the line is selected, it's 
run through a W3NQN type filter so it's got a pair of coils running to 
ground on the shack side.

In lieu of the RFC, I could use some high-value resistors at the feedpoint. 
Those would be transparent at HF and would help to draw off the static 
charge, in the event something back down the line is disconnected (or the 
antenna switch termination resistors get fried, etc).

How about that?

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

-----Original Message----- 
From: Jim Lux
Sent: Saturday, February 09, 2013 6:18 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] grounding elevated vertical for lightning?

On 2/9/13 12:43 PM, Mark Robinson wrote:
> Could he not also ground through an rf choke to bleed off static?
>
At first that's what I thought, but OP was looking for lightning
protection.

And, if you wanted to operate top band, for instance, a choke that has
high Z at 2MHz is also going to have high Z for lightning (which has a
lot of its power around 1 MHz).  Even for 80m, it would be tricky..



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