eric@lucii.org on Thu, 23 Jan 2003 15:12:22 -0500


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Re: [PLUG] wireless router


I've seen connectors similar to this before.  

You are correct that there is no electrical difference.
"reverse polarity" refers to the relationship between the 
connector shell and the contact.  

Both of those jpg's show a FEMALE connector shell.  One (the
"normal" one) has a MALE center contact, the other (reverse)
a FEMALE center contact.

There are occasions (to prevent mis-mating of connectors) where
you might want to go with the "reverse polarity".

Match the connector to the device(s) you are working with which
will typically be "normal" and not "reverse".  

Eric

On Thu, Jan 23, 2003 at 11:58:23AM -0500, Paul wrote:
> Good question!  The only difference appears to be the pin and hole 
> arrangement.  This is the reverse connector: 
> http://www.hyperlinktech.com/web/copyrighted_images/hxrsf58.jpg  And 
> this is the regular connector: 
> http://www.hyperlinktech.com/web/copyrighted_images/hxsm200.jpg
> 
> I don't know if there is an electrical change, which is what I've been 
> wondering about.  If I make a reverse SMA to BNC cable, will the signal 
> from my antenna be reverse polarity, and would it matter?
> 
> Tom wrote:
> 
> >What's a "reverse polarity" SMA connector.  I've heard of double male and 
> >double female connectors, but RF connectors generally are straight-thru 
> >connections (i.e center to center & shield to shield).
> > 
> >
> 
> 
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#   Eric Lucas 
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_________________________________________________________________________
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