Motorola 557925-001-00 User Manual

 

 
Location 

Transmitter 

-28dBm 

42dB 

Antenna to air conversion loss.  Measured at 1m 
using integrated Intel Pro2200B/G in Dell Laptop. 

A 

-32dBm 

4dB 

Same room, with AP mounted 12” from floor 

a 

-60dBm 

32dB 

Down one floor 

B 

-55dBm 

27dB 

One room over 

C 

-83dBm 

55dB 

Across the hall, over one room 

D 

-80dBm 

52dB 

Two rooms over 

 
Note some interesting results: 
 

1.  We can predict the measured RSSI three rooms over would be -105dBm, well below the 

carrier detect range. 

2.  RSSI loss is approximately 25dB per room/wall.  Vertical loss is 32dB. 

Based on the RSSI loss from A to B, this installation would require one WallPlate for every four 
rooms. 

Motorola, Inc 

 

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