[MLB-WIRELESS] Omni Drectional Antenna Design

Hamish Moffatt hamish at cloud.net.au
Tue Jan 15 20:24:16 EST 2002


On Tue, Jan 15, 2002 at 05:01:26PM +1100, Simon Hall wrote:
> Lets go the whole hog and get a 37db (That's the FCC max isn't it)

FCC maximum isn't important here - what's the ACA maximum?

http://www.aca.gov.au/legal/licence/class/spread.htm
is the class license regulations for spread spectrum devices.
It appears that the limit is simply 4W EIRP. 4W is 6 dBW or 36 dBm.

That means a 1W transmitter, 6dBi antenna and no feed line loss,
or a 2W transmitter, 3dB feedline loss, and a 6dBi antenna, etc.

With a 37 dBi gain antenna, you could use a 1mW (0 dBm) transmitter
with some feedline loss at best.

Hamish
-- 
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>

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