[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.
>
>
> To unsubscribe: send mail to majordomo at wireless.org.au
> with "unsubscribe melbwireless" in the body of the message
>
>
To unsubscribe: send mail to majordomo at wireless.org.au
with "unsubscribe melbwireless" in the body of the message
More information about the Melbwireless
mailing list