[MLB-WIRELESS] Antenna / Range info

[darrend at natwide.com.au]

Thought this may be relevant to those trying to guess expected range for
different antennas
Taken from Cisco Aironet Antenna's datasheets

Type      VBeam          HBeam           Rng at 2MBs  Rng at 11MBs
5.2 dbi Omni   75 deg         360 deg    1500M          500M
12 dbi Omni    7 deg          360 deg    7.4Km          2.3Km
13.5 dbi Yagi  25 deg         30 deg     10.5Km         3.3Km
21 dbi Dish    12 deg         12 deg     40Km           18.5Km

Notes/Assumptions
- using the same antenna with 15M cisco cable (3.4 db loss) at both ends.
- using 100mw devices
- ideal conditions.... blah blah blah etc etc etc

Going by these figures you'd hope to get atleast 10-15km with a
Lucent/Galaxy combination which is encouraging!

Darren Dreis
IT Manager
Nationwide Digital Products P/L
Tel 03 9548 9444  Fax 03 9548 9040



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