[MLB-WIRELESS] Wireless amp

Liam Devanny lgdev1 at student.monash.edu.au
Sat Mar 5 23:34:49 EST 2005


When calculating power output and dealing with Watts and dB use this 
formula: P(dB) = 10log(W) where W is the power in mW. This will solve 
any confusion regarding the two sets of units. The actual power output 
at the antenna would be: 199526.23 mW or 199.5 Watts

On 04/03/2005, at 10:21 AM, Michael Borthwick wrote:

> Amplifier Safety
>
> Every 10dBi of antenna gain gives you 10 times the power.
> Every 3dBi of antenna gain gives you double the power.
>
> Connecting an amplified card or AP to high gain antenna is not only 
> illegal, it is dangerous.
>
> Why?
>
> A 1W amp into a 23dBi antenna would give you:
>
> 1W x 10 (for 10dBi)  x 10 (another 10dBi) x 2 (for 3dBi) = 300Watts 
> EIRP at the antenna.
>
> Scary.
>
>
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>


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