On Fri, Nov 08, 2002 at 02:03:42AM +0100, Eden Akhavi wrote:
> Following on from the questions I asked a week back - I have done some
> basic testing today connecting two radios to a single antenna. The
> primary objective was to enable us to increase the number of channels
> available on a sector antenna rather than deploying a second antenna.
>
> I used Huber & Suhner 3 way Power Divider, connected an AP2000 with two
> radios (1 on channel 1, the other on channel 10) - the antenna used was
> an H&S 85 degree sector antenna. It appeared to perform flawlessly - the
> number of errors did not increase on either of the radios, neither did
> the signal or noise level change.
>
> I'll do some proper testing over the coming days and if anyone is
> interested I will post the results. Our biggest headache is increasing
> the number of antennas on a mast, if we can make this work properly it
> will allow us to increase the number of clients on a single antenna by
> spreading them over different channels.
>
> If anyone else has tried this please let me know - I'd like to compare
> notes.
The testing I would like to see you do in a controled test harness
would be to have one AP receive primarly and one AP trasmit. Another
signal would be transmitted to the AP that is primarly receiving.
The client signal should be at some nominal RX level like -60 or
-50 dBm. See what the BER and bandwidth you get as you change TPO
on the AP that is transmitting and you change the channel speration.
Normally one would do this in a lab with a setup like:
Power
Divider
RX-AP >--------@--------< TX-AP
|
|
\
/
/ Variable
\ Attenuator
/
|
^
Client
Card
Tim
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