Hi David, maybe the length of ground strap is an antenna at the shorter
wavelengths. Bet this would run some big bucks though. Are ALL the
connections good?
73, Dwight
On Tue, 28 Apr 1998 23:45:45 -0400 (EDT) (rfi-digest) writes:
>
>rfi-digest Tuesday, April 28 1998 Volume 01 :
>Number 059
>
>
>
>In this issue:
>
> [RFI] Ground rod placement???
>
>See the end of the digest for information about na-user-digest
>
>----------------------------------------------------------------------
>
To: <rfi@contesting.com>
>Date: Tue, 28 Apr 1998 21:20:47 -0400
>From: "David E. Shelton" <w4des@bellsouth.net>
>Subject: [RFI] Ground rod placement???
>
>Hello all,
>
>I am seriously considering placing a ground rod through my basement
>floor, concrete slab. I have my shack in the basement near one of the
>basement windows. I previously had the rig and other equipment
>grounded
>to the 8ft. ground rod immediately outside the window by the shack
>with
>about a 9-10ft run of ground strap. However, I have a deep basement
>and
>consequently the ground rod was vertical to the station and just
>outside
>
>on the otherside of the concrete wall. With a field strength meter I
>determined the ground strap and rod were both radiating RF. Now my
>antennas are on my 50ft tower at the end of the house and the tower
>has
>three ground rods at its base, connecting to the legs and the
>lightning
>arrestors, at the base and top of the tower. The previous problem with
>the ground rod out the basement window seemed to be related to a
>ground
>loop situation.
>
>I ask all this because I get complaints now when running >60 watts
>output from some neighbors and one day I would like to run an
>amplifier
>with about 500 watts or so. I understand that the RFI is coming from
>the
>
>antennas, Force 12 C4 and home brew wire antennas off the tower, and
>not
>
>the rig in the basement but I want the station to be as RF clean as
>possible. So I know I will need a ground rod at the rig/amplifier
>which
>I do not have now. After the problems with the ground rod outside the
>basement window my elmer suggested to run the station without the
>ground
>
>rod at the rig and use the braid of the coax, that is my feedline as
>my
>only ground which is grounded at the base of the tower approx 45ft
>down
>the feedline. So I am considering drilling a hole in the basement
>floor
>to drive in a ground rod which would be only a couple feet run of
>ground
>
>braid to the rig and all other equipment connected to it.
>
>What do you think? Would appreciate any knowledgable feedback.
>
>- --
>73 dit dit,
>
>David E. Shelton, RN
>W4DES Amateur Op
>w4des@bellsouth.net
>
>Amateur Radio Transmitting Society
> of Louisville, KY
>
>
>
>- --
>Submissions: rfi@contesting.com
>Administrative requests: rfi-REQUEST@contesting.com
>WWW: http://www.contesting.com/rfi-faq.html
>Questions: owner-rfi@contesting.com
>
>------------------------------
>
>End of rfi-digest V1 #59
>************************
>
>
>--
>Submissions: rfi@contesting.com
>Administrative requests: rfi-digest-REQUEST@contesting.com
>WWW: http://www.contesting.com/rfi-digest.html
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>
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