Signal Attenuation - Receive Signal Strength Indicator (RSSI)

  1. Use the Wireless > Access Control menu to view the RSSI information for a client.
  2. From your wireless PC or MacBook, or iPad, login into the device as described in the “How do I log into the modem’s Web User Interface?” FAQ.
  3. Select Wireless from the main menu
  4. Select Access Control from the left side menu
  5. Scroll to the bottom to see the Connected Clients list. Find your wireless device and check the RSSI.
  6. Refresh your screen to indicate a current RSSI value.
  7. Move around the room and note how the RSSI value drops farther into the negative as you get farther from the Wireless Gateway, or as you go behind obstructions.
  8. Run some speed tests to note differences in performance.

 

Signal Attenuation and performance drops can result when the wireless signal is absorbed by an object or material, or as the wireless client moves farther away from the Wireless Gateway. The table below illustrates rule of thumb attenuation for different kinds of materials.

 

Material

Attenuation (dB)

2.4 GHz

5 GHz

Interior Drywall

3-4

3-5

Cubicle Wall

2-5

4-9

Wood Door (hollow-solid)

3-4

6-7

Brick / Concrete Wall

6-18

10-30

Glass / Window (not tinted)

2-3

6-8

Double-Pane Coated Glass

13

20

Bullet-Proof Glass

10

20

Steel / Fire Exit Door

13-19

25-32

Human Body

3

6

Free Space

.24 / ft.

.5 / ft.

Tree (est.)

.15 / ft.

.3 / ft.