For Best Performance - Panasonic KX-F900 Operating Instructions Manual

For best performance

Battery charge
To power the handset, install the battery (p. 11) and charge it for about 15 hours before initial use (p. 13).
Operating distance/noise
Calls are transmitted between the main unit and the handset using wireless radio waves. For maximum
distance and noise free operation, the recommended main unit location is:
Away from electrical
appliances such as a TV,
radio, or personal computer.
Raise the
antenna.
In a HIGH and CENTRAL
location with no obstructions
such as walls.
3