Cobra Electronics LI 3900DX owner manual Scrolling through Mode Functions, Privacy Codes

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Mode Functions

Operation

Scrolling through Mode Functions

By scrolling through the Mode Functions, you will be able to select or turn on/off preferred features of your microTALK® radio. When scrolling through the Mode Functions, your radio features will be displayed in the following order:

Mode Button

 

 

 

Set CTCSS Privacy Codes

 

 

 

 

Set DCS Privacy Codes

 

 

 

 

Set VOX On/Off

 

 

 

 

Set VOX Sensitivity Level

 

 

 

 

Set Memory Locations

 

 

 

 

 

 

Set Channel Scan

 

 

 

 

Set CTCSS Privacy Code Scan

 

 

 

 

Set DCS Privacy Code Scan

 

 

 

 

Set Memory Location Scan

 

 

 

 

Set VibrAlert® and/or Call Alert

 

 

 

 

Set Call Alert Tone Signal

 

 

 

 

Set Roger Beep On/Off

 

 

 

 

Set Keystroke Tones On/Off

Scroll through the mode functions using the Mode button. Each press and release of the Mode button will advance to the next mode function. Press the Talk button at any point to return the radio to Standby mode.

Privacy Codes

Your microTALK® radio incorporates two advanced coded squelch systems that can help to reduce interference from other users on any given channel. CTCSS (Continuous Tone Coded Squelch System) provides 38 privacy codes and DCS (Digitally Coded Squelch) provides 83 privacy codes. This provides a total of 121 Privacy Codes. Either system can be used on all channels, but both systems cannot be used on the same channel at the same time.

To successfully communicate using a privacy code, both the sending and receiving radios must be tuned to the same channel and to the same privacy code system (CTCSS or DCS) and privacy code number. Each channel will remember the last privacy code system and number you select.

The privacy code 00 is not a privacy code, but allows all signals to be heard on a channel that is set to 00 on both the CTCSS and DCS systems.

8 English

 

 

 

 

Introduction

Operation

Customer Assistance

Warranty

Set CTCSS Privacy Codes

Mode Button

To select a CTCSS privacy code:

1.After selecting a channel, press the

Mode button until the CTCSS icon appears and the small numbers flash on the display

 

 

(01 through 38).

CTCSS Privacy Code

 

 

 

NOTE

 

 

If DCS is turned on at the channel

 

 

selected, the display will flash the

 

 

 

 

CTCSS icon and “OFF.” To switch from

Channel Buttons

 

 

DCS to CTCSS, press the Channel Up

 

 

or Channel Down button while the

 

 

display is flashing “OFF.” The display

 

 

will then show the small numbers

 

 

 

 

flashing and you will then be able

 

 

to proceed to step 2.

2.Press using the Channel Up or Channel Down button to select a CTCSS privacy code. You can hold the Up or Down button for fast advance.

3.When your desired CTCSS privacy code is displayed, choose one of the following:

a.Press the Mode button to enter the new setting and proceed to other functions.

b.Press the Lock/Enter button to enter the new setting and return to Standby mode.

c.Do not press any buttons for 15 seconds to enter the new setting and return to Standby mode.

Nothing Comes Close to a Cobra® 9

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Contents LI 3900DX Making Life Easier and Safer Product Features FeaturesAvoid exposure to extreme temperatures Replace battery compartment cover and belt clipCaring for Your microTALK Radio Estimated operation time on full charge 10 hoursUsing Your Radio Selectable HighLow Power Output To toggle between high and low powerListening for a Response When you are finished talking Channels To select a channelSignal Strength Signal Strength Meter Lock FeatureTo turn the lock feature on or off Auto Squelch/Maximum RangeMode Functions Scrolling through Mode FunctionsPrivacy Codes Set Ctcss Privacy CodesTo turn VOX mode on or off Standby modeSet DCS Privacy Codes To select a DCS privacy codeMemory Locations To program a memory locationTo recall a stored memory channel location While recalling a stored memory locationTo de-program a memory location While de-programming a memory locationFlash on the display Channel ScanTo scan channels Privacy Code Scan To scan privacy codesPress the Mode button to proceed to other functions Memory Location ScanTo scan memory locations Number flash on the displayCall Tone Settings To change call settingsTo change a call tone setting Press the Mode button untilMode Functions General Specifications Mode Button To change keystroke tonesGeneral Specifications Keystroke TonesFCC License Product Service Product Service QuestionsWarranty and Trademark Acknowledgement Trademark AcknowledgementCobra line of quality products includes