On Thu, 3 Apr 2008 16:13:32 -0700 (PDT), Adam Chapman
<adam.chapman@student.manchester.ac.uk> wrote:

>I read that the Cisco Aironet
>2.4 GHz Bridge transmitter power is 20 dBm. I cant seem to find a
>defintion for a bridge transmitter though, so im not sure if i know
>the Tx power of the patch antenna or not. Does 20 dBm seem reasonable
>for this antenna?

The power rating of an antenna is the point where the antenna can be
safely operated without melting, arcing, or self-destructing. There's
no way an antenna is going to do any of these at 20dBm (100
milliwatts).

>If the patch antenna power is 20dBm (which is the legal maximum in the
>UK), then over a 550m range the SOM should be just below 28 dB
>according to my calculations. Although I was aiming for 28 or above
>the PER does not appear to be too bad.

Antenna power handling ability has nothing to do with range.

Any antenna that has the proper gain, size, and weight characteristics
will work. It's up to you to determine the requirements.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558