[time-nuts] GPS Patch Antenna Electrode Tarnish

DaveH info at blackmountainforge.com
Fri Jan 11 07:48:08 UTC 2013


The reason that silver is used is that the oxide is also a very good
conductor.

Don't worry. 

> -----Original Message-----
> From: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] On Behalf Of KD0GLS
> Sent: Thursday, January 10, 2013 12:33
> To: Discussion Time-Nuts
> Subject: [time-nuts] GPS Patch Antenna Electrode Tarnish
> 
> Dear Nuts,
> 
> Does the buildup of tarnish on the exposed silver electrode 
> of a typical GPS ceramic patch antenna have any degrading 
> effect on signal reception?  A little Tarn-X easily removes 
> it, but I wonder if it's worth bothering, as it always comes 
> back weeks or months later.  I've seen it mentioned in 
> various data sheets that tarnish will of course affect 
> solderability, but no mention of signal loss.
> 
> Thanks in advance.
> 
> 73,
> Brent, KD0GLS, Minneapolis
> 
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