Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

How do I calculate what value my external antenna should be in dBm?

I am configuring some AIR-LAP1242AG AP's with a variety of external antennae. I notice within the WLC the antenna gain should be value which is then "x 0.5 dBm". My question is for an AIR-ANT4941 antenna, which is a 2.2 dBi Dipole 2.4 GHz, what should the value be configured to, and how do you calculate it?

Many Thanks

Jamie

1 REPLY

Re: How do I calculate what value my external antenna should be

It should be 4.4 you calculate by doubling the db of the antenna. 4.4 x .5= 2.2 A lot of people ask why the software calculates it this way. There are 2 answers. One, it is the way the algorithms are calculated to paint the heatmaps and two, because that's how it's always been done dang it! LOL Just kidding.

151
Views
0
Helpful
1
Replies