Embraer EMB145 - Page 2345

AIRPLANE
OPERATIONS
MANUAL
NAVIGATION AND
COMMUNICATION
MARCH 30, 2001
2-18-21
Page
9
Code
01
HF CONTROLS AND INDICATORS
CTL-230 CONTROL PANEL
1 - GAS DISCHARGE DISPLAY
− Shows channel number (CHAN), mode of operation (MODE),
transmit and receive frequency in kilohertz, and separate R
(receive) and T (transmit) annunciators.
2 - CHANNEL FREQUENCY SELECT KNOBS
− Knob functions when selecting a discrete frequency
FREQUENCY
SELECT KNOB
KNOB FUNCTION
Left outer Selects the MHz digits (2 through
29) in the FREQ kHz display.
Left inner (pushed in) Selects the 100-kHz digit (0 through
9) in the FREQ kHz display.
Left inner (pulled out) Rotate to select USB, AM, LSB
modes.
Right outer Selects the 10-kHz digit (0 through
9) in the FREQ kHz display.
Right inner (pushed in) Selects the 1-kHz digit (0 through 9)
in the FREQ kHz display.
Right inner (pulled out) Selects the 100-Hz digit (0 through 9)
in the FREQ kHz display.