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confusion on transmit power

hi

im reading the data sheet of my access point and am a little confused

"Transmit power @ normal temp range for FCC:

802.11b: 16 dBm @ 1TX, 19 dBm @ 2TX, 20.5 dBm @ 3TX

802.11g: 13 dBm @ 1TX, 16 dBm @ 2TX, 17.5 dBm @ 3TX

802.11n: 17 dBm @ 1TX @ MCS0~5/8~13, 13 dBm @ 1TX @ MCS6/14"

i basically understand everything except "@ 1TX" or "@ 3TX". what's a "TX"?

thank you

markus

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: confusion on transmit power

Hello,

Tx should be Transmitter. Like Rx is Receiver.

1Tx means one antenna, 2Tx means two antenna.  There are no 3rd transmitter out yet I believe.

However you have 3 Rx.

Hope it helps.

Regards,

Brendon

3 REPLIES
Cisco Employee

Re: confusion on transmit power

Hello,

Tx should be Transmitter. Like Rx is Receiver.

1Tx means one antenna, 2Tx means two antenna.  There are no 3rd transmitter out yet I believe.

However you have 3 Rx.

Hope it helps.

Regards,

Brendon

New Member

Re: confusion on transmit power

makes sense to me now. thanks brendon

Cisco Employee

Re: confusion on transmit power

Hi Brendon,

I don't know what those TX means. However, in 11b and 11g there is no way to have more than 1 transmitter. Even a 1242 with 2 antennas in diversity, there is only 1 antenna transmitting at a time, so I'm suspicious that this would be the meaning.

Only in 11n, you have 2 antennas transmitting at the same time, and no 3 yet.

Regards,

Nicolas

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