Wireless Network speed question...

Recently in my company we have replaced the antenna on the roof as well as the coaxial cable that is connected to it. We have two other locations that we are feeding Internet to from our location. The connection speed fluctuates, I send pings to both locations and sometimes I get replies ranging from 400ms to 12ms. The coaxial cable connects to a breeze net that we have in the office, that is the only peice of hardware that we havent replaced other than the other antennas in the other buildings. We are trying to figure out what it could be that is causing these speeds to fluctuate. Any feedback would be greatly appreciated.

I forgot to mention that our other locations are not that far apart, one is about a 2 blocks away and the other is a little farther but still at light to sight.

There are many things that can affect and unstable wireless connection.

Have you done the calculations to find out just how much signal your are actually putting out the antenna. This is most important because you will already know the receive sensitivity of your equipment and you will then be able to calculate if you have enough signal at both ends to make a stable connection.

The other thing is to change from G to B
Yes this will reduce your overall data throughput but it often stabilizes the signal because it prevents the radio from trying to continually trying to achieve a 54M connection.

Try this site for your calculations

Radiolabs - Wifi Range Calculator

Regards

Fred