[Amps] placement of RF choke bypass cap.

[Gary Schafer]

Bill,
Perhaps you could explain to us why coax cable does not allow RF energy to
move from the inside surface of the shield to the outside surface if not for
skin effect?
You would agree that the inside surface of a coax cable carries RF current
would you not?

You might want to google "RF skin effect". It might be educational.

Also look at this article on G3SEK's web site regarding skin effect.
http://www.ifwtech.co.uk/g3sek/misc/skin.htm

73
Gary  K4FMX


> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]
> On Behalf Of Bill, W6WRT
> Sent: Tuesday, March 23, 2010 10:05 AM
> To: amps at contesting.com
> Subject: Re: [Amps] placement of RF choke bypass cap.
> 
> ORIGINAL MESSAGE:
> 
> On Mon, 22 Mar 2010 13:03:07 -0400, "Gary Schafer"
> <garyschafer at comcast.net> wrote:
> 
> >Yes Larry, but the conclusion drawn by the one doing the experiment was
> that
> >the current "must go thru the disk when placed in the middle". No
> account
> >for capacitance was given.
> 
> REPLY:
> 
> Yes, it was given. In both experiments, the disk was placed with the
> wire in the center and then repeated with the edge of the disk
> connected to the wire. The capacitance was essentially the same in
> both cases, as evidenced by essentially  the same resonant frequency.
> The conclusion they drew was the right one - the current flows
> directly through the disk, NOT from the center, out to the edge and
> back down the far side.
> 
> Both of the experiments (the one with the antenna and the one with the
> loop over a ground plane) allowed for capacitance and both  came to
> the same conclusion. What more do you want?
> 
> 73, Bill W6WRT
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