Connecting An External Antenna; Connecting External Speakers - Uniden PRO 520XL Manual

to attach the mounting bracket and the microphone bracket to your
vehicle (you don't have to drill holes). Slide the radio into the bracket
and use the included knobs to hold it at the preferred angle.

Connecting an external antenna

WARNING! The antenna used for this radio must be installed at least
16.92 inches (43 cm) away from all persons. The antenna must not
be collocated or used with any other antenna or transmitter.
CAUTION: Never operate your radio with no antenna or with a
damaged antenna cable. This can damage the radio.
You will need to purchase an antenna to operate the radio. There are
two basic types of mobile CB antennas--full-length whips and loaded
whips--with a wide variety of mounts to suit different vehicle locations.
Follow the manufacturer's installation instructions carefully.
Tune your antenna using a Standing-Wave Ratio (SWR) meter: set
the radio to channel 20, and adjust the antenna until the SWR is as
close as 1:1 as possible.
CAUTION: Make sure the SWR is less than 2:1 before using the
radio. An SWR higher than 2:1 can damage the transmitter.
Your Uniden dealer can help you select the antenna that is best for your
transmitter and antenna information.

Connecting external speakers

Your radio supports two external speakers for remote monitoring and
public address features. External speakers are sold separately.
To prevent feedback, direct all speakers away from the microphone.
Function
Impedance
Rating
Connect to
External monitor
Remote receiver
monitoring or substitution
for internal speaker
8 Ohms
7 Watts
EXT.SP. jack
(
Public address broadcasts
6
PA speaker
8 Ohms
7 Watts
PA.SP. jack
(