J&M Corporation JMCB-2003 User Manual

5 Controls and Functions

A. Auxiliary Audio Volume—Controls auxiliar y audio/input volume to the headsets.

B. Squelch Control—Allows CB background noise to be eliminated when no signal is present.

C. On/Off CB and Intercom Volume Control—In the inward position the knob turns the
entire unit on and off and controls the CB volume. In the pulled-out position, the knob
controls the intercom volume.

D. Push-To-Talk Lever—Activates CB radio transmission mode.

E. Hi/Lo Power Selector Button—Controls CB TX power level.

F. Channel Up—Selects any one of the 40 channels available on the CB radio. It is
also used to select any one of the 10 weather channels in the Weather Mode.

G. Channel Down—Selects any one of the 40 channels available on the CB radio. It is
also used to select any one of the 10 weather channels in the Weather Mode.

H. Mode—Used to select CB channels, weather channels or keypad beep.

I. LCD Display—Identifies CB or weather channe, Tx (transmit), Wx (weather mode), and
signal/power strength.