Garmin SL40 SL 40 User Guide - Page 10
Detailed Operation, Power On/Off, Volume, Squelch, Selecting Frequencies - vhf
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DeGteatilteindgOSptearratetidon Selecting Frequencies Volume, Power, and Squelch Control 119.80 119.80 Frequency selection with Large and Small knobs 119.80 s121.50 121.50 s119.80 Toggle Standby and Active frequencies with the Flip/Flop button 4 Detailed Operation This section introduces the basic operating details of the SL40 VHF Communications Transceiver. Power On/Off Turn the Power/Volume control clockwise past the OFF detent. The SL40 may be installed to be powered from the avionics panel so the on/off control will be disabled. Volume Turn the Power/Volume knob clockwise to increase the volume level and counterclockwise to de- crease volume. Squelch Pull the Power/Volume knob out to disable automatic squelch. Selecting Frequencies New frequencies are first selected as a Standby frequency and then toggled to the Active side when desired. While viewing the frequency display, use the Large and Small knobs on the right side of the SL40 to select the desired frequency. 1. Turn the Large, outer knob to change the values in 1 MHz increments. The MHz selection range is between 118 and 136 in 1 MHz steps. 2. Turn the Small, inner knob to change the values in 25 kHz increments. The kHz selection range is between 000 and 975 kHz in 25 kHz steps. Note that only two digits are displayed to the right of the decimal point. Turn the Large and Small knobs clockwise to increase and counterclockwise to decrease the frequency values. Standby frequency selection is not inhibited during transmit. Press the Flip/Flop button to toggle the Standby frequency to the Active frequency.