In a message dated 97-10-31 12:46:28 EST, steve@austin.ibm.com writes:
<< I am about to turn in specs for the room, and want to include grounding.
What should we use for a shack RF ground - is a ground rod driven into the
concrete sufficient? It is probably 50 or 75 feet from the shack to the
outside of the building, so I am afraid that a ground rod outside the
bldg would not be very effective at HF.
As a general comment, the more you do to keep the lightning out of the
building - the less you have to do inside the building. If you can drive a
ground rod through the floor into whatever is underneath it, it should have a
positive effect on your overall grounding system.
>>Also, should we have a separate ground for lightning near the tower
or where the hardline enters the bldg?
>>
The operative word is "near the tower" AND "where the hardline enters
the building". You want to build a Single Point Ground System. It's described
in my reprint "Grounding Systems For Hams" available for an SASE with 2
stamps from TOWER TECH, Box 572, Woodinville, WA, 98072.
73, Steve K7LXC
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