Silver oxide is a good conductor, but the tarnish we see is silver sulfide, which is a semiconductor. That causes problems at low voltages.
This StackExchange answer has more details: https://physics.stackexchange.com/a/365483 wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jul 12, 2021, at 4:06 PM, Bob Liesen <[email protected]> wrote: > > Hi gang, > I have been told by several people who are clearly in the know of many > things, that tarnished silver is a >better< conductor than untarnished. > And I have also been told by others just as in the know, that that is a > myth. > Anyone have definite info? > > Bob WB0POQ > > On Mon, Jul 12, 2021 at 4:11 PM Bill Frantz <[email protected]> wrote: > >> I was told that all the compounds produced when silver is >> tarnished are conductive. So, when I built a single-lever >> paddle, I used two short pieced of silver wire, obtained from a >> jeweler friend, at right angles for the contacts. I haven't had >> any contact problems with that paddle. >> >> 73 Bill AE6JV >> >> On 7/12/21 at 3:35 PM, [email protected] (Wes) wrote: >> >>> On 7/12/2021 11:47 AM, Paul Dluehosh wrote: >>>> ...They may look ugly with a black patina, but that may be >>>> because they have real silver plating. >>> >>> That's what TARN-X is for. >> >> ----------------------------------------------------------------------- >> Bill Frantz | Privacy is dead, get over | Periwinkle >> (408)348-7900 | it. | 150 Rivermead >> Rd #235 >> www.pwpconsult.com | - Scott McNealy (1999) | Peterborough, >> NH 03458 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
