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Re: [TenTec] A grounding question

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] A grounding question
From: "Steve Hunt" <steve@karinya.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 8 Jan 2007 18:13:21 -0000
List-post: <mailto:tentec@contesting.com>
I know some folk who take the "thin/wide" advice to its logical (and cheap) 
conclusion and use copper clad PCB material as a base on which all their 
equipment sits. They then use short/wide straps soldered directly to this base 
to connect to the back of the equipment. It doesn't look "pretty" but it does 
mean a low-inductance path between all the bits of kit.

73,
Steve G3TXQ

  ----- Original Message ----- 
  From: Martin AA6E 
  To: Discussion of Ten-Tec Equipment 
  Sent: Monday, January 08, 2007 7:07 AM
  Subject: Re: [TenTec] A grounding question


  Mike Bryce wrote:

  Don't know about any "experts" here, but my ITT Radio Engineers Handbook 
  gives a skin depth of 2.6 mils (0.0026 inch) at 1 MHz for copper.  So at 
  HF frequencies and higher, most all the current flows in the top (say) 
  10 mils of the copper -- any copper below that doesn't help very much. 
  Pound for pound and dollar for dollar, thin/wide strap gives the lowest 
  impedance connection.

  Even at 60 Hz, the skin depth is sometimes important - about 1/3 inch.

  73 Martin AA6E
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