[MLB-WIRELESS] Legal power output

[David]

----- Original Message -----
From: "Justin" <littlejuz at optusnet.com.au>
To: <melbwireless at wireless.org.au>
Sent: Tuesday, July 16, 2002 5:50 PM
Subject: [MLB-WIRELESS] Legal power output


> Folks,
>
>  n00b questions time. With all this talk about power outputs and DB gains
> etc, can someone please tell me if I understand it all correctly?
>
>  3 db gain = twice the power. Correct?

    Yes sort of - for ever 3db. (3, 6, 9, 12, 15) = 30 x 2 x 2 x 2 x 2 x 2

>  All gains and losses are added or subtracted to get a final number?
>  The legal power output is about 4 or 5 watts?

    4 watts if you are in the 2400~2463 MHz area only or
    200 miliwatts if you are using an part of the 2463~2483.5 MHz


>  This output is a calculated value based on the cards output power x the
> antenna gain?
>
>  So, if I have a 30 miliwatt card, plugged into an antenna with a 16 db
> gain, but I lose 1 db in the coax, then my overall gain is 15 db. 15 db /
> 3db = 5 x gain. 5 x 30 mw is 150 miliwatts effective power put out through
> my antenna. Did I get that right?

No its about 960 miliwatts
>
>  A 100 milliwatt card in the same setup would give me half a watt?
>
>  Or, have I got it all wrong? :)
>
> Regards,
> Gaz.
>
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