Note: Always use 50-ohm, RG-58, or RG-8, coaxial 
cable to connect an outdoor antenna. If the antenna 
is over 50 feet from the scanner, use RG-8 low-loss 
dielectric coaxial cable. If your antenna's cable does 
not have a BNC connector, your local RadioShack 
store carries a variety of BNC adapters.
Connecting an Earphone/Headphone
For private listening, you can plug a 
1
/8-inch 
(3.5 mm) mini-plug earphone or mono headphones 
(not supplied) into the headphone jack on top of 
your scanner. This automatically disconnects the 
internal speaker.
Listening Safely
To protect your hearing, follow these guidelines 
when you use an earphone or headphones.
• Do not listen at extremely high volume levels. 
Extended high-volume listening can lead to 
permanent hearing loss.
• Set the volume to the lowest setting before you 
begin listening. After you begin listening, adjust 
the volume to a comfortable level.