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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Cobra Electronics LI 3900DXC owner manual Scrolling through Mode Functions, Set Ctcss Privacy Codes
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LI 3900DXC specifications

Cobra Electronics has long been known for its innovative communication devices, and the LI 3900DXC is no exception. This handheld two-way radio showcases a perfect blend of advanced technology, user-friendly features, and rugged durability, making it ideal for outdoor enthusiasts and professionals alike.

One of the LI 3900DXC's standout features is its extended range capability. With a power output of up to 5 watts, this device can communicate over distances of up to 28 miles in open terrain. This impressive range allows users to stay connected even in remote locations, making it a preferred choice for camping, hiking, and off-road adventures.

The radio operates on 22 FRS/GMRS channels, providing flexibility and reliability across various environments. The inclusion of channel scan functionality helps users quickly locate the best available channel for communication. Furthermore, with 142 privacy codes, the LI 3900DXC enhances user privacy by minimizing interference from other radio users in the vicinity.

Built for durability, the LI 3900DXC features a rugged design that meets Military Specifications for resistance to dust and water, ensuring it can withstand the elements. This resilience makes it a dependable companion for outdoor activities, ensuring reliability in challenging conditions.

Another significant characteristic of the LI 3900DXC is its advanced noise-canceling technology. This feature effectively filters out background noise for clearer communication, which is crucial when navigating busy environments or while on the move. Users can count on crisp, clear sound quality even amidst distractions.

The Cobra LI 3900DXC also prioritizes convenience with its user-friendly interface. It boasts a large, easy-to-read display that provides essential information at a glance, including channel number, battery life, and signal strength. The device includes a built-in flashlight, making it a practical tool in low-light situations.

Battery efficiency is a strong selling point for the LI 3900DXC. It is equipped with a rechargeable lithium-ion battery that provides long-lasting power, minimizing the need for frequent recharging. Additionally, it can be charged using the included charging dock or a standard USB cable, adding to its versatility.

In summary, the Cobra Electronics LI 3900DXC is a feature-rich two-way radio designed for both casual users and serious adventurers. With its extended range, durable construction, advanced noise-canceling technology, and user-friendly features, it stands out as a reliable communication tool for any setting. Whether traversing the great outdoors or managing a professional team, the LI 3900DXC delivers exceptional performance and functionality.
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