[Elecraft] K3S IF signals seen in P3 and NaP3 but nothing heard

[Bob McGraw K4TAX]

It is silver sulfide {tarnish} which is semiconductor and will therefore 
conduct electricity, but will reduce the surface conductivity.   To what 
extent will depend on the thickness of the tarnish.    Surface tarnish 
will not affect bulk conductivity unless the "bulk" thickness is very 
thin.   Since silver is soft, when one contact rubs against the other it 
cleans itself. However, if the contacts are not designed to do this then 
there could be the issue and longer term problem with accumulation of 
low conductivity sulfides.  Basically then resulting in loss of 
conductivity.

73

Bob, K4TAX


On 7/10/2019 6:56 PM, Wes wrote:
> I beg to differ: https://groups.io/g/Elecraft-K3/album?id=37256
>
> Some of these are disengaged purposely. And no, I don't live in a 
> corrosive atmosphere, the opposite ends are pristine.
>
> Wes  N7WS
>
> On 7/10/2019 1:33 PM, w4sc wrote:
>> The TMP connectors should never need cleaning unless they have been 
>> contaminated (usually by body oil from handling) as they are silver 
>> plated.  Don’t handle the contact areas of the male plug, as once oil 
>> is on the plug it will transfer to the jack on the board, potentially 
>> causing connection issues.
>>
>> Ben W4SC
>>
>> Sent from Mail for Windows 10
>
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