I'm in the process of creating a SPGP for my station and have used your
site as well as Polyphaser's for most of my information. This has turned
into a real project just to establish the grounding system.
Perhaps you can answer one question I have??
I have obtained several hundred feet of copper strap in various
I have about 200' of 2"x.005, 100' of 2"x.01 and 80' of 6"x.01.
Are these typical of the thicknesses used for grounding between ground
and the SPGP?
I planned on using cadweld connections for the ground rods.
Thanks for any help you can provide.
Joe - KC2TN
[mailto:email@example.com]On Behalf Of Bill Hider
Sent: Wednesday, July 24, 2002 10:38 PM
To: Mike Gilmer, N2MG; Tower Talk (mail list)
Subject: Re: [Towertalk] re: bulkhead ground system
I must strongly disagree.
By disconnecting cables inside your shack in lieu of (instead of) any
lightning protection, you are leaving your house open to a fire started by
the arc-over from lightning in any open circuit cable from the outside
(SO-259, telephone line, dangling PL-259, etc.) I think it's just stupid to
just disconnect the equipment and not have Polyphasers or other similar
device on each cable entering the house.
I keep all of my equipment connected all of the time, including IC-781 (with
Beverage and HF antenna cables connected), IC-4KL, 4 PacketCluster radios, 6
rotor control boxes, PCs, telephone wires, etc). I have a 24/7 fully
If you've seen my website www.erols.com/n3rr , you know I have substantial
lightning protection installed.
----- Original Message -----
From: "Mike Gilmer, N2MG" <firstname.lastname@example.org>
Sent: Wednesday, July 24, 2002 8:51 AM
Subject: [Towertalk] re: bulkhead ground system
> N5OT wrote:
> > > I still just disconnect everything when I am not using the station.
> This is probably the single most effective method for protecting your
> amateur equipment. Even the SPG cannot be counted on entirely
> protecting your stuff from nasties. And one does not need to take a
> full hit to receive damage. Close-by hits generate all kinds of
> transients that take out stuff like phones, modems and trasceiver filter
> switching diodes all the time.
> I practice good hygiene and usually have the PL-259s (and all the AC,
> phone lines, LAN cables) disconnected at my station. However, the
> antenna/rotator/etc. wires still pass through something (a window or a
> wall) and enter the house. It is at that point one has allowed
> "lightning" (or its effects) to enter and somehow at or near that point
> it should be dealt with - enter the SPG.
> Mike N2MG
> Self Supporting Towers, Wireless Weather Stations, see web site:
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additional 5 percent off
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Self Supporting Towers, Wireless Weather Stations, see web site:
Call 888-333-9041 to place your order, mention you saw this ad and take an
additional 5 percent off
any weather station price.
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