Wilson Electronics LLC 271265 User Manual

 Warning: 

The Yagi antenna must always be located so the back or side points to 

the inside antenna. Never point the front of the Yagi antenna toward the 

inside antenna – this is to prevent oscillation.

 Warning: 

Connecting the signal booster directly to the cell phone with use of an 

adapter will damage the cell phone.

 Warning: 

Connect both the outside and inside antenna cables to the signal 

booster before powering up the amplifier.

 Warning: 

Use only the power supply provided in this package. Use of a non-

Wilson product may damage your equipment.

 Warning: 

RF Safety:  FCC regulations require that any fixed outside antenna used 

with this signal booster may not have gain less cable loss that exceeds 

15 dBi and must be located at least 30 inches from all people. Inside 

antennas must not exceed 7 dBi gain less cable loss in the 800 MHz 

band or 10 dBi gain less cable loss in the 1900 MHz band and must be 

located at least 8 inches from all people. 

Lightning protection is recommended for all in-building installations.

Finding Signal Strength and Calculating Coverage Distance
Signal strength and the corresponding coverage distance you can expect to achieve 

with your signal booster/antenna system are based on a combination of several 

factors: the received signal strength of your cell phone alone, the signal gain 

achieved by your signal booster and antennas and the signal loss from cables, taps 

and splitters you may be using.
To calculate your approximate signal coverage distance, you can enter this 

information into our Coverage Area Calculator on the Technical Support page on our 

website (www.wilsonelectronics.com). If you prefer, you can manually calculate your 

approximate signal coverage distance.
Measure the Outside Signal Level (OSL) at the intended outside antenna location 

using a cell phone in test mode. (For assistance, visit the Phone Test Modes section 

on the Technical Support page on our website or call 866-294-1660.) The OSL will 

always be a negative number. (Even if the cell phone shows a positive number, you 

will need to change it to a negative for this calculation.) Maximum signal strength is 

usually about -50. When the signal weakens to about -100 or worse, the call may be 

dropped.
Your inside and outside antennas will also add signal gain, again depending on the 

antenna models you are using. You will also experience some signal loss from 

cables, splitters and taps used to connect your system.

Warning: Verify that both the 

outside antenna and the inside antenna are connected 

to the signal booster before powering up the amplifier.

Warning: Use only the power supply provided 

in this package.  Use of a non-Wilson product may 

damage your equipment.