[Premium-Rx] Lightning hitting your Premium RX

[Gary Mitchelson - N3JPU]

The hybrid AC protectors provide the lighting protection on the AC line
side. 

The crude drawing shows the ground lines going out straight, the do really
curve around but do not go all the way around, a long way to do that.
Hopefully the runs I have will launch enough of the strike into the ground.
Won't know until it happens though. Didn't have access to a Megger so do not
know what the final impedence. I have good soil for conductivity so I'm
hoping it's down below 5 ohms.

Their HF protector goes down to 100KHz.

Documents: http://www.arraysolutions.com/Products/ice/10.html

Products: http://www.arraysolutions.com/Products/ice/3.html

Polyphaser's article on Ham Shack protection
http://www.polyphaser.com/ppc_TD1016.aspx

Gary Mitchelson
N3JPU Montgomery Co. MD  FM19
http://www.mitchelson.org/ 



-----Original Message-----
From: Cecil Acuff [mailto:chacuff at cableone.net] 
Sent: Tuesday, April 05, 2005 16:39
To: Gary Mitchelson - N3JPU; 'Premium-Rx (E-mail)'
Subject: Re: [Premium-Rx] Lightning hitting your Premium RX


Gary,

        I looked over your pictures.  Looks great.  Typical with what I see 
at most of the commercial tower sites I frequent.  The question remains as 
to whether you have your house electrical ground tied to your tower 
grounding system.  It appears you do by virtue of the AC power protectors 
plugging into AC outlets in your shack.  Curious why the ground runs with 
the rods went out at angles away from the shack.  Common wisdom in the 
commercial tower business is to create a ring around the building being 
protected.  May have been inconvenient to circle the house...

What is the lower end frequency of the Coax protectors?  I typically use 
Polyphasor systems at work but that is for VHF/UHF stuff.  I'm not sure 
their stuff goes down to LF or not.  Seems protecting to 500Khz or even to 
1.8 Mhz is a little more difficult.

You've done what most folks are unwilling to do...that is to spend as much 
on your protection systems as a new high end transceiver costs.   Should be 
well protected!

What did your final ground point impedance end up being?