Would there be a need for an RF ground if no RF gets into the shack via
poorly designed antennas?
73, Keith NM5G
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Ian White GM3SEK
Sent: Wednesday, November 23, 2005 2:03 AM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] station grounding question
Richard W. Harris wrote:
>Hi,
>A simple question on station grounding. I have a copper wall plate for
>common grounding of all of my station equipment. I have 2" wide copper
>strap to connect each piece of gear to the copper panel. Most pieces
>of equipment have a simple bolt for grounding. Seems to me that a
>single/small bolt connection to the copper strap is not a very good
>connection. Any suggestions here? Should I simply be connecting the 2"
>copper strap to the grounding bolt of each piece of gear or is there a
>better method?
Don't worry - INSIDE the station, you are not expecting large lightning
currents in the RF ground bonding, so the grounding bolts on the backs of
the rigs are already quite big enough.
The purpose of ground bonding inside the station is to keep all the
equipment at the same potential as the panel, and you have already done the
right thing by using a wide, low-inductance strap for almost the whole
length of the run. What you use for the last few inches as a jumper can
hardly matter.
(But W3LPL is also right about braid being a poor RF conductor, which gets
worse with age as surface oxidation separates the strands. A solid strap of
the same width - no matter how thin - is always a better
conductor.)
--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|