[Mobile-Portable] Tin vs Gold Contacts?

[N1KHB at aol.com]

I wouldn't be too concerned about dirt. Any small reasonable  amount that 
might be present will be pushed aside along with any excess  lube. Besides, 
you can cover connectors if being stored in an  especially dirty environment.
   People used to say not to lubricate locks with liquid lube as  well, but 
you know what? I never had a frozen or corroded lock that wouldn't  open. 
Instead I had freely operating locks even in harsh environments when other  
people subscribing to the "dry" theory of lock care were struggling trying to 
 get them to work.
  Wet lubes may not be perfect, but they sure beat struggling against  
other difficulties.
 
Joe N1KHB
 
 
 
 
In a message dated 6/13/2009 9:52:52 P.M. Eastern Daylight Time,  
JimMiller at STL-OnLine.Net writes:

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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