ap230 poor signal

  • 1
  • Question
  • Updated 1 year ago
We replaced 5 AP120s with 5 AP230s and now we have very poor signal strength in that area. Are these APs not supposed to be stronger radios. Do we have to mount them differently
Photo of Ouellette Michael

Ouellette Michael

  • 7 Posts
  • 0 Reply Likes

Posted 1 year ago

  • 1
Photo of Om Prakash Ravipati

Om Prakash Ravipati

  • 22 Posts
  • 2 Reply Likes
Coverage depends on the radiation patterns and the transmitted power levels. Please check the power settings on your APs. It is a recommended practice to assign channels statically and set the Tx power levels to auto to ensure proper coverage.
Photo of Bill W.

Bill W.

  • 222 Posts
  • 35 Reply Likes
I agree that the TX power levels should be set to auto. But if this is a high density environment, the max transmit power should be lowered too. Something like 11 for 2.4 and 14 for 5 is a good starting point.
Photo of Ouellette Michael

Ouellette Michael

  • 7 Posts
  • 0 Reply Likes
Yes. This has been our standard policy. However upon installing the new ap230s everything dropped in signal strength.
Photo of Om Prakash Ravipati

Om Prakash Ravipati

  • 22 Posts
  • 2 Reply Likes
Are the channels non overlapping? Are you using 20MHz channels? Is this observed on 2.4 Ghz or 5 Ghz frequency band? Try using InSSIDer to observe the various signals in the area.
Photo of Knarf

Knarf

  • 18 Posts
  • 2 Reply Likes
Yes, you will need to likely remount the APs differently for better coverage. 

The big thing you really need to look at is the environment that you are placing the AP in along with the actual position of the AP. AP230s have internal antennas. They will therefore have a cardioid shaped RF pattern. You need to keep this in mind for when you are placing the AP for client coverage. You also need to make sure that you are not exceeding 25 feet height wise otherwise you will cause dead spots.  

I would recommend trying other positions, but try to position the AP to meet the coverage of the clients. For example, if your client coverage area is a classroom, put the AP in the middle facing down towards the calls and make sure the ceiling does not exceed 25 feet. Don't put the AP facing up on a ceiling tile. 

As far as transmit power, you should not exceed 15 dBm otherwise you will cause what is called the unbalanced power effect between end user devices and the APs. You also want to be mindful of Co channel interference.