what is the better ?

RouterOS Beginner Basics
1

_**what is the better in transmitting the signal ?
groove 5ahn 5 ( i have 2 sets they are very good with ominiantenna( ALPHA 5GHZ 15 DBI )
or ominitiku-5hnd ?







the tx power of the first is 200 mw with 15 dbi antenna
the tx power of the second is 400 mw with 7 dbi antenna
so .what is the better ?**_

2

Hi,
According to CWNA books:

Consider a 10 dBi antenna with 1 watt of power applied. What is the EIRP (output power
at the antenna element)?
1 W + 10 dBi (a ten-fold increase) = 10 W Page.34

It must be:

0.2 w * 15 = 3.0 w

0.4 w * 7 = 2.8 w

I think !?

3

Groove EIRP with mentioned antenna 6.325W
Omnitik EIRP with mentioned antenna 2.005W

http://www.wifinerd.com/wifi-calculators.html

anyway, higher gain antenna is better always, because it also improves receive, not just transmit.

4

Thanks normis, I see
and It should be
The EIRP = Tx Output Power (dBW/dBm) + Antenna Gain (dBi) - Line Loss (dB)