Uniden UH-O53 - Manual (Page 6)

Controls and Indicators
S P E A K E R /
M IC R O P H O N E C H A R C IN O J A C K
J A C K
A N T E N N A
C O N N E C T O R
S IM P L E X m U P L E X
S W IT C H
S Q U E L C H
C O N T R O L
- O N O F F A f O L U M E
C O N T R O L
- C H A N N E L
S E L E C T O R
On-Off/Volume Control — Use to turn the
radio on or off, and to adjust the volume level.
Squelch Control — Use to eliminate background
noise (the "rushing" sound) heard between
transmissions,
Channel Selector — Rotate this knob to select
the desired channel,
Simplex/Duplex Switch — Selects Simplex or
Duplex. Communication on CHI to CHS.
Antenna Connector— Screw the flexible antenna
into this TNC-type connector.
Speaker/Microphone Jacks — Plug the optional
Remote Speaker/Micro phone.
Charging Jack — Plug the supplied AC Adaptor/
Charger into this jack to charge/recharge the
battery while in the UH-053.
UH-053