Radio Engineering and Radio Engineer's Handbook are two different critters.  My copy of Radio Engineering is the third edition and the pertinent information is on p.20.

To partially quote: "Thus, with a flat-strip conductor, the current flows primarily along the edges."

 On 4/25/2018 11:34 AM, Josh wrote:
You're going to have to explain that to a whole lot of high current flat wound 
inductors & transformers.

What are you referencing? The only Terman I have handy is Radio Engineer's 
Handbook.

73
Josh W6XU

Sent from my mobile device

On Apr 25, 2018, at 11:17 AM, hawley, charles j jr <c-haw...@illinois.edu> 
wrote:

RF does not flow on the entire surface of flat copper tape (Electronic and 
Radio Engineering by Frederick E. Terman 4th Edition, p 22). The RF current 
only flows on the outside edges of the strip, not on the middle outside 
surfaces. Think of looking at the end of a longitudinal slice out of a solid 
copper rod.

Chuck KE9UW
c-haw...@illinois.edu

Sent from my iPad

On Apr 25, 2018, at 12:32 PM, Fred Jensen <k6...@foothill.net> wrote:

Sounds like you're following the rules.  You might consider flat copper tape 
instead of wire for bonding. Lightning is an RF event and currents will be 
confined to the outside surfaces of the conductors.  Consequently, the surface 
area rather than volume of the conductor is what matters most. The conductors 
on one of the original transmission lines from Hoover Dam to Los Angeles were 
hollow.


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