Re: BiQuad antenna question

One thing to note is you can't weatherproof a BNC. N and SMA are screw 
type connectors, and can easily be sealed.

I have another wifi project going that I suppose I should finish. ;-) I 
took a USB type wifi unit and removed the antenna with the idea of 
mounting a SMA hardline on it, which could be screwed to the back of the 
anntenna with a SMA to N adapter. [The chipset doesn't work with 
netstumbler, so I lost interest in the project, though it could still be 
used for communications.]

Note that you can get SMA on hardline in surplus shops. This may be 
another way to avoid having to stuff the coax in the pipe.



Kevin Purcell wrote:
> An N type connector os just a 50 ohm impedance (usually) connector to  
> match the 50 ohm transmission line (coax) with no bumps. You can get  
> it in 75 ohm too.
> 
> <http://en.wikipedia.org/wiki/N_connector>
> 
> BNC == Bayonet N Connector is similar and designed for smaller coax  
> (RG-58 sized) and can be used a 2.4GHz.
> 
> <http://en.wikipedia.org/wiki/RG-58>
> 
> As others have commented the center pin of the N connector makes a  
> rigid mount point. And that evil RG-174 (or similar) has a horrible  
> loss at 2.4GHz.
> 
> <http://nocat.net/connectors.html>
> 
> On Feb 20, 2007, at 11:39 PM, Rastislav Galia wrote:
> 
>> thank you for your answer. I was afraid that N connector has some
>> special properties (with respect to impedance) that makes it a must- 
>> have
>> for
>> most antennas.
> 
> --
> Kevin Purcell
> [email protected]
> 
> 
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