Icom IC-U68 User Manual

Describes how to remove and attach the battery case.

Explains the installation of AA dry cell batteries into the case.

Provides safety precautions for installing Ni-Cd and dry cell batteries.

Details the physical layout and components of the transceiver's front, side, and top panels.

Explains the functions of each key on the transceiver keypad, including secondary functions.

Details the primary and secondary functions assigned to each key on the keypad.

Explains the various indicators and segments displayed on the transceiver's LCD screen.

Describes connecting external DC power sources for charging or operation.

Instructions for charging Ni-Cd battery packs using an external charger.

Details how to operate the transceiver using an optional cable and external power source.

Instructions on attaching accessories like the antenna and belt clip.

How to connect the flexible antenna to the transceiver.

Instructions for attaching and removing the belt clip.

Information on optional rechargeable battery packs and their usage.

Guidance on understanding and managing battery pack lifespan.

Details rapid charging of battery packs using the BC-119 charger.

Instructions for simultaneously charging up to six battery packs with the BC-121 charger.

Guides users on how to set operating frequencies on the transceiver.

Provides essential information before setting frequencies, like operating modes.

Details the steps for inputting frequencies and programming them into memory.

Explains how to select tuning step increments for frequency adjustment.

Describes how to perform 1 MHz tuning increments using the FUNC and DIAL switches.

Explains how to activate the key lock function to prevent accidental operation.

Explains how to select and navigate through memory channels.

Describes the process of programming frequencies and settings into memory channels.

Instructions on how to erase data stored in memory channels.

Explains the concept of repeater operation and offset frequencies.

Details how to program transmit frequency offsets for repeater communication.

Instructions for installing and selecting tone units for subaudible tone and scrambler functions.

Guides on how to set the tone encoder frequency for each channel.

Details how to set the tone decoder frequency for receiving calls with specific tones.

Explains how to use tone squelch and voice scrambler features.

Describes the operation of tone squelch for silent standby and selective calls.

Explains how to use the voice scrambler for private communication.

Describes how to eliminate noise after a signal disappears using the noise mute function.

Steps for programming DTMF codes into memory channels.

How to transmit programmed DTMF codes manually or from memory.

Procedures for manual DTMF code transmission.

How to transmit pre-programmed DTMF codes from memory.

How to restrict DTMF functions during channel indication mode.

Describes the available scan types: empty scan and busy scan.

How channels are searched and scan pauses on unoccupied channels.

How channels are searched and scan pauses on occupied channels.

Settings for scan function control and scan type selection.

How to enable or disable the scan function during channel indication mode.

How to select between empty scan and busy scan types.

How to start and stop the scan function.

How to program channels to be skipped during scanning.

Explains the pager function for selective calling and message notification.

Details the process of programming ID codes and group codes for pager and code squelch.

Prerequisites for programming pager and code squelch functions.

Table showing assignment of ID/group codes to channels.

Further steps for programming ID codes and transmit codes into channels.

How to use the pager function for calling specific stations or groups.

Steps to call a specific station using the pager function.

How to wait for and receive calls from specific stations.

Explains code squelch for receiving calls only from stations with matching codes.

Overview of the ANI function, including selective calling and answer back.

How to toggle between channel and frequency indication modes.

Steps to prepare the transceiver for ANI function use, including set mode configurations.

Detailed operation of the ANI function while in channel indication mode.

Steps to call a specific station using ANI selective codes.

How to use pre-programmed selective codes for ANI.

Procedures for making group calls using the ANI function.

How to wait for and respond to incoming ANI calls.

Additional settings related to ANI operation.

How to display and select ANI code channels.

How to program ANI codes during channel indication.

Setting the time-out timer for ANI operations.

Using the scan function for selective ANI calls.

Setting the delay time for transmitting codes during ANI scanning.

How to rotate the transceiver display for easier viewing.

How to toggle confirmation beeps ON or OFF.

Controls for the display backlight.

How the display lighting turns off after 5 seconds of inactivity.

How to keep the display lighting continuously ON.

Procedure for resetting the transceiver's CPU to default settings.

Introduction to common set mode and its function.

Explanation of common set mode items and their bit combinations.

Setting high/low power selection during channel indication.

Setting CH 1 indication behavior on power ON.

Restricting DTMF operation during channel indication.

Restricting DTMF memory operation during channel indication.

Controlling the scramble function during channel indication.

Controlling the scan function during channel indication.

Controlling ANI code display during channel indication.

Setting confirmation beep behavior for key presses.

Enabling or disabling the monitor function.

Enabling or disabling the noise mute function.

Setting pager code memory overwrite during channel indication.

Controlling manual DTMF transmit during channel indication.

Setting the transmit delay for pager operations.

Setting DTMF memory overwrite during channel indication.

Adjusting noise squelch sensitivity.

Setting the time-out timer period for ANI operations.

Setting the delay for squelch closing and DTMF squelch opening.

Setting the time-out timer for non-ANI operations.

Overview of the cloning process for transferring transceiver data.

Details on connecting the cloning cable between transceivers.

Step-by-step guide for cloning data between two transceivers.

Information on recognizing and handling cloning errors.

Describes the installation of the UT-86 Tone Squelch Unit.

Describes the installation of the UT-88 Voice Scrambler Unit.

Technical specifications for the IC-V68 and IC-U68 transceivers.

List of available optional accessories for the transceivers.