>OK, maybe you are right. But, if I don't have the ground hooked up to the
rig and I touch my tuner, the SWR varies. When I hook up the ground, it
doesn't do that. And I know for a fact, I have run long wire antennas and
if I don't have a good ground, I get bit bad by RF on the mike. When I hook
up the ground, it quits. It must be doing something. I'm confused! 73
Tom W7WHY<
::Of course it's doing something. It's helping to correct the engineering
ills of your particular installation. A multi-band low-Z ground is
difficult to achieve, however, unless your station is sitting on the ground.
Mine isn't. So, I use antenna systems engineered to be uninfluenced by the
presensc or absence of any ground connection. That's easy to do, by
avoiding such things as voltage-fed antennas...
-WB2WIK/6
-----Original Message-----
From: JC Smith [mailto:jc-smith@comcast.net]
Sent: Thursday, July 13, 2006 8:49 AM
To: 'Tom Osborne'; 'Towertalk'
Subject: [BULK] - Re: [TowerTalk] SECOND FLOOR SHACK
Some of the experts on here may disagree, and while I don't think there is
anything magical about hooking up a ground it does do a lot more than
protect you from lightning. It may not improve your signal, that's not what
I'm talking about, but the ARRL Antenna Book agrees (with your experience,
Tom, and with similar experiences I have had) that a good, low-impedance
path to ground for RF is necessary. As a practical matter, avoiding 1/4
wavelength ground lengths for every desired frequency of operation may not
be practical so to repeat my original suggestion: "consider a ground "tuner"
like the MFJ Artificial Ground."
73 - JC, K0HPS
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]On Behalf Of Tom Osborne
Sent: Wednesday, July 12, 2006 7:28 PM
To: Towertalk
Subject: Re: [TowerTalk] SECOND FLOOR SHACK
> There is NOTHING magical about the earth that causes a >connection to it
> to reduce "stray RF" in your shack.
OK, maybe you are right. But, if I don't have the ground hooked up to the
rig and I touch my tuner, the SWR varies. When I hook up the ground, it
doesn't do that. And I know for a fact, I have run long wire antennas and
if I don't have a good ground, I get bit bad by RF on the mike. When I hook
up the ground, it quits. It must be doing something. I'm confused! 73
Tom W7WHY
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