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Re: magnet mount antenna. possible WiFi?

Antenna characteristics (specifically length, but also shape/construction/material etc...) tend to be purpose (or at least frequency) specific. I doubt that the antenna you're looking at will help you with WiFi transmission unless that was it's intended use.

I have however seen some 802.11b PCMCIA cards with sockets for external antennas - maybe one of these with it's associated antenna would be your best bet for an FCC-compliant longer range solution.

I am also aware of several people who have opened up the antenna section of 802.11b PCMCIA cards and retrofitted them with a 1W (yes... 1W) 2.5ghz amplifier chips from Celeritek and others to give them illegal transmission power (but nonetheless excellent results) in peer to peer modes...

I don't know what your application is, but for general in-building use i suspect any improved transmit / recieve benefit you get from a bigger antenna would be insignificant compared to the attenuation by walls and floors. If you are using this outside with line of sight then perhaps the improved range would become more useful.

Nick

----- Original Message -----
From: Jennifer Pellinen <>
Date: Saturday, October 4, 2003 3:38 am
Subject: magnet mount antenna. possible WiFi?

> I was at the goodwill and saw an antenna and I was
> wondering if it could be used for wifi. Its a radio
> shack magnetic mount antenna. I presume its used for a
> CB. The antenna its self is thin and has a coiled
> section in the middle and screws into the base. The
> base has a black cable comming off of it
> 
> The antenna looks like this one
> http://www.wearcomp.org/steve5.jpg
> the one in picture D. I am thinking a head mounted
> antenna like the one in that pic would nice. But I
> don't know if the antenna I saw would work for WiFi.
> It might look a litte funny to have an antenna on your
> head, but if it extends the range of the WiFi its fine
> by me. 
> 
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