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[TowerTalk] P.S.: Surge supression

Subject: [TowerTalk] P.S.: Surge supression
From: "Rob Atkinson, K5UJ" <>
Date: Fri, 07 Nov 2003 18:45:11 +0000
List-post: <>
It seems to me that it will nevertheless still add an unwanted rf ground loop. It sounds like it might not be a problem provided you have common mode chokes in the feedlines between exciter and amp, and amp and transmatch (or if no transmatch, amp and feed to antenna), i.e. each item in the rf chain has a choke in the feedline between it and whatever's next.

Rob Atkinson

<<<This connection to the AC safety is there anyway unless you
are using cheater plugs on all your AC cords. The chassis'
of all your rigs and amps are connected to the third wire
ground of your AC service. Those chassis' are in turn
connected to your single point RF ground via the coax
cables going through the SPG panel. Running an extra
wire from the AC service ground to the RF SPG probably
won't change much since you will just be putting a wire
in parallel with multiple connections that are already there.
The only way to get around this is to bring the AC service
into the shack through the SPG.

73 de Mike, W4EF..................>>>

<<<The [surge supressor] in the station should be grounded to the single
point station ground
panel, as well as to the home safety ground.>>>

<<This sounds like a great way to turn your house wiring dc safety ground
into a giant antenna by transferring rf from the shack rf ground to the
wire on the house service lines.>>

p.s. It also sounds like a way to set up a nice ground loop in your
so RF can get into places you don't want it.

Rob Atkinson

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