[TowerTalk] Fwd: Fwd: Antenna to Shack Ground Connection

[Hans Hammarquist via TowerTalk]

Brian,


Yes, you are right all the shield of the feed-lines are connected (or should be connected) tween the tower and the shack ground. The risk of getting the shields fused (burned off) is reduced with a separate grounding wire between the tower and the shack. Large enough your shack might even survive a direct hit.


Again, the ground wire should be run close to the feed lines in order to minimize induced current from near strikes.


Hans - N2JFS



-----Original Message-----
From: Brian Carling <bcarling at cfl.rr.com>
To: Bill Turner <dezrat at outlook.com>
Cc: Towertalk <towertalk at contesting.com>
Sent: Fri, Jan 30, 2015 11:10 pm
Subject: Re: [TowerTalk] Fwd:  Antenna to Shack Ground Connection


Most of us have that already in the form of out coax feedline's outer conductor. 
Typically this is grounded at the antenna and also in the shack. Am I right?

Best regards - Brian Carling
AF4K Crystals Co.
117 Sterling Pine St.
Sanford, FL 32773

Tel: +USA 321-262-5471




> On Jan 28, 2015, at 8:36 PM, Bill Turner <dezrat at outlook.com> wrote:
> 
> At the risk of starting a flame war (wouldn't be the first time), I
> have to question the purpose of running a ground wire from the tower
> to the shack.
> 
> What is it you are trying to accomplish?  Or putting it another way,
> what current are you expecting to flow between your tower and your
> shack?
> 
> If your tower takes a direct lightning strike, won't a small
> percentage of the strike find its way into this ground wire, and since
> the wire to earth connection is not zero ohms, some of the strike will
> find its way into your shack?  
> 
> Even if you disconnect your coax and rotator cables during a storm,
> this ground wire leaves your shack vulnerable, doesn't it?
> 
> Does not sound good to me but if there is a good reason, I want to
> hear it.
> 
> Bill W6WRT
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