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4

Getting Started

Detailed Operation

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 

decrease 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 fre-

quency values. Standby frequency selection is not inhibited during transmit. 

Press the 

Flip/Flop

 button to toggle the Standby frequency to the Active frequency. 

119.80

119.80

Frequency selection with Large and Small knobs

Toggle Standby and Active frequencies with the 

Flip/Flop button

119.80     s121.50

121.50     s119.80

PULL SQUELCH

Volume, Power, and Squelch Control

Selecting Frequencies

Summary of Contents for echomap 40 series

Page 1: ...SL40TM VHF Comm pilot s guide ...

Page 2: ...her electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited Information in this document is subject to change...

Page 3: ...be the standard that all other avionics will be compared to You can be confident in knowing that you are the owner of the state of the art in aviation communication Our products are built to last and to allow for upgrad ing as your needs change in the future The SL40 is also packaged in configurations to meet the needs of customers for base station and mobile ap plications Contact the Garmin Custome...

Page 4: ...he Product Registration link on the home page Also be sure to record your serial number in the space provided to the left If you have any questions Garmin s Product Support department may be reached Monday through Friday 8 00 AM to 5 00 PM Central Standard Time by phone at 1 800 800 1020 or by e mail at sales garmin com Compliance License and Warranty Information Serial Number Use this area to rec...

Page 5: ...lecting Frequencies 4 Frequency Monitoring 5 Recalling a Frequency 5 Remote REM 5 Auto Stack List LST 6 User Stored Frequencies MEM 6 Weather WTH 6 Aborting a Frequency Recall 6 Removing a Frequency from User Memory 7 Replacing a Frequency from User Memory 7 Assigning an ID to a User Frequency 7 Intercom Function 8 Stuck Mic 8 System Functions 9 Software Version 9 RF Level 10 Noise Level 11 Headph...

Page 6: ...iv Introduction This page intentionally left blank ...

Page 7: ... is composed of 5x7 dot matrix alphanumeric high intensity LEDs A photocell is located in the top left corner of the front panel display The photocell automatically controls the intensity of the display from low brightness at night to high brightness during daylight operation Brightness levels may also be controlled manually SL40 Display and Control Description ...

Page 8: ...ob to the right increases speaker and headphone amplifier volume level Rotate the knob to the left to reduce the volume level Pull the knob out to disable automatic squelch The SL40 may be installed to have the on off switch disabled and to have power controlled from the avionics panel Large and Small Knobs The dual concentric knobs on the right side of the SL40 are used to select frequencies or to...

Page 9: ...s automatically enabled MON Monitor Press the MON button to listen to the standby frequency When the active frequency receives a signal the unit will switch automatically to the active frequency RCL Recall Press the RCL button to retrieve stored frequencies MEM Memory Press the MEM button to store the displayed Standby frequency in memory Controls ...

Page 10: ...ge 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 righ...

Page 11: ...ess several areas of stored frequencies The SL40 can also receive airport frequencies if connected to certain GPS receivers Remote REM The Remote function will allow the SL40 to access the airport frequency database in an GPS receiver Press RCL to view the Remote REM frequencies Then turn the Small inner knob to display the available frequencies The waypoint type and frequency are displayed If not...

Page 12: ...e the frequency or abort the process Duplicate frequencies are not stored 1 Press RCL and then turn the Large outer knob to reach the User frequencies 2 Turn the Small inner knob to view the User stored frequencies in numeric order Weather WTH The standard weather channels are stored in the memory of the SL40 You cannot transmit on a weather channel frequency Weather information service is not ava...

Page 13: ...e knob to show Replace 4 Turn the Small knob to choose the frequency to Replace 5 Press MEM to replace the displayed stored frequency with the current Standby frequency Or turn the Large knob to Abort and press MEM to cancel and leave memory as it was Assigning an ID to a User Frequency Frequencies in User MEM memory can be given an alphanumeric identifier for your ease of use 1 Press RCL Turn the ...

Page 14: ...tening level The receive function will automati cally become active when a signal is detected but the volume will be reduced during intercom activity A small I is displayed above and to the left of the s or m of the standby frequency to indicate the Intercom function is selected The Microphone Squelch Sensitivity can be set in the System Functions Stuck Mic The SL40 helps protect you from a situat...

Page 15: ... the MON button for about three seconds to reach the System Function Turn the Large outer knob to display the available functions Adjustments are made with the Small inner knob Press the MON button again to exit the System Functions Software Version The Software version is available for reference when you contact Technical Support SW VER x xx Software Version System Function Summary ...

Page 16: ... Level RF Level The RF Level function shows the relative signal strength of the frequency you are listening to The range displayed is between 0 and 255 The value will constantly change as you are viewing it as signal conditions change System Functions ...

Page 17: ...ers indicate a higher input level necessary to break squelch Turn the Small knob to change the value The range is from 0 to 127 Transmit Mic The Transmit Microphone page allows you to control which microphone is permitted to transmit You may choose Mic 1 2 or both To adjust the Transmit Mic control 1 Press and hold the MON button for about two seconds This will access the System Functions mode 2 R...

Page 18: ...ditions A small sensor at the upper left of the display is used for this function There are two adjustments available for controlling the brightness level of the display The first controls the lower brightness level in the automatic adjustment range Lo Dsp Lvl This is the brightness used when in total darkness The second adjusts the upper limit of this range Hi Dsp Lvl This is used when bright ligh...

Page 19: ...y Control Backlit Keypad Controls Transmit Status Indicator 2x8 Frequency Memory and Recall Stores Recalls Eight User Defined Frequencies user programmable alphanumeric naming of frequencies Stores Recalls Previous Eight Frequencies Frequency Monitor Function listens to standby while monitoring the active Voice Activated Intercom Dedicated Emergency Channel Selector Upgradeable to Include GPS Optio...

Page 20: ...e page The SL40 display lens is coated with a special anti reflective coating which is very sensitive to skin oils waxes and abrasive cleaners It is very important to clean the lens using an eyeglass cleaner that is specified as safe for anti reflective coatings one suit able product is Wal Mart Lens Cleaner and a clean lint free cloth Performance Transmit Power 8 watts Carrier Power 28 watts Input P...

Page 21: ......

Page 22: ...151st Street Olathe Kansas 66062 U S A Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL U K Garmin Corporation No 68 Jangshu 2nd Road Shijr Taipei County Taiwan www garmin com Garmin AT P N 560 0954 02 Rev C Garmin P N 190 00488 00 Rev A ...

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