Re: RF Ground Connections - Wire Type

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi Dan,

On 17 Jul 2002, at 20:19, Tesla list wrote:

> Original poster: "Daniel McCauley by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>
> 
> > >      I would not expect the differences to be notable at audio
> > > frequencies where skin depths are comparable with overall conductor
> > > diameter. Stranded wire is most often used where mechanical
> > > flexibility is required.
> > >
> > > Regards,
> > > malcolm
> 
> 
> Keep in mind its not just audio frequencies you are dealing with.  The fast
> transient peaks commonly encountered in percussive instruments have very
> fast rise times on the orders of nano-seconds.  Your talking components of
> 20MHz and greater.
> 
> Dan

Indeed. How many audio amps that you know of faithfully reproduce and 
send those kinds of frequencies to loudspeakers? I haven't seen the 
issue of braid quantitatively addressed in rebuttal yet either and 
the differences between conductor types that I observed at somewhere 
around 140kHz (the test frequency from memory) was stark to say the 
least.

Malcolm