[Mobile-Portable] Tin vs Gold Contacts?

Jim Miller KG0KP JimMiller at STL-OnLine.Net
Sat Jun 13 21:52:31 EDT 2009


Anything that is oily or greasy will attract "dirt" that will remain in the 
female part of the contact and anywhere else it gets to and is hard to 
completely get rid of.  It is not recommended.  If you use the "tin" type of 
contacts, just DO IT and then be prepared to disconnect and clean with a 
contact cleaner which will not leave a residue that will attract dirt or 
anything airborn.  They will last for quite some time, depending on your 
environment, just not as long as gold.

73, de Jim KG0KP

----- Original Message ----- 
From: "kd4e" <doc at kd4e.com>
To: "Mobile-Portable Reflector" <mobile-portable at mailman.qth.net>
Sent: Saturday, June 13, 2009 6:07 PM
Subject: Re: [Mobile-Portable] Tin vs Gold Contacts?


> But if I treat them with NoOx or the like the tin should be OK?
>
>> Low signal has little to do with it. Gold is a tarnish free finish. Tin 
>> is
>> less resistant to corrosion/oxidation, but is still serviceable in less
>> harsh  environments. Both will wear off with multiple insertions. The 
>> specs
>> will tell  you how many. When I used to buy connectors at my work QTH, I 
>> almost
>> always got  gold contacts because of reliability concerns.
>>
>> Joe N1KHB
>>
>>
>>
>>
>> In a message dated 6/12/2009 2:05:43 P.M. Eastern Daylight Time,
>> doc at kd4e.com writes:
>>
>> In a  Mate-N-Lok or Molex will there be a meaningful
>> difference in contact  quality between tin nd gold contacts?
>>
>> There is a huge price  difference.
>>
>> I am thinking it is only meaningful for low-signal  apps.
>>
>
> -- 
>
> Thanks! & 73, doc, KD4E
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