Midland Precision Series 4001 Owner's Manual page 9

MIC GAIN CONTROL: Adjust this control to suit individual voice
characteristics and ambient noise conditions to provide maximum
intelligibility.
S/RF POWER METER: This meter is used in receiveing to indicate the
relative signal strength of incoming signals. When transmitting, it shows RF
power output.
BRIGHT/DIM Switch: When turned to DIM, the meter backlight and control
knob backlight intensitiy is reduced.
ANL/OFF Switch: When turned on it operates in the receiver to reduce
atmospheric and ignition noise.
FIL/OUT Switch: When turned on the audio filter changes the tone quality of
received signals for improved ease of listining in high noise conditions.
PA/CB Switch: When in PA it causes your voice to operate the optional
external PA speaker. In CB the microphone operates the transmitter.
MICROPHONE CONNECTOR: Plug in the supplied microphone to this
connector. Received signals will not be heard without the microphone.
CHANNEL KNOB: This easy to operate control allows changing of CB
channel, either up or down.
CHANNEL INDICATOR: The LED displays the channel number.
TX LED: indicator for showing the unit is transmitting.
AWI LED: The Antenna Warning Indicator will activate to warn you of
trouble in your antenna system. For example, if the antenna or connecting
cable is damaged, badly mismatched or disconnected, the AWI will light. In
this event, you should stop transmitting until the problem is corrected.
Push-To-Talk bar: Press this bar to cause the radio to transmit. Hold the
microphone about 2ninches from your mouth and speak in a normal voice.
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