I was told by a expert from one of the major TV transmitter manufactures that
clean
copper and clean silver would not show any actual difference in operation at
RF. It
is when it ages and oxide coats the surface that the two materials take on very
different "rf conduction" properties.
Copper oxide bad ... silver oxide no problem.
FWIW,
Terry W6RU
"William L. Fuqua III" wrote:
> It seems that silver's conductivity is only
> 6 to 11 percent better than copper. And the skin depth
> of silver and copper at 100Mhz is about .00026 inches. So to get
> the entire 6 to 11 percent improvement in Q you would
> have to have the plating at least .26 mils thick. And that
> is at 100 Mhz, at 10 Mhz it would be about a mil. thick.
> That is thick for plating now days.
> Silver does solder well and makes for great switch contacts.
> I wonder what properties of silver are so desirable.
>
>
> 73
> Bill wa4lav
>
> William L. Fuqua III P.E. E-mail WLFUQU00@POP.UKY.EDU Phone (606)
> 257-4155
> Department of Physics and Astronomy CP-177 Chem. Phys. Bldg.
> University of Kentucky , Lexington, Ky 40506-0055
>
>
>
> --
> FAQ on WWW: http://www.contesting.com/ampsfaq.html
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|