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General| Brand | Icom |
|---|---|
| Model | IC-T81A |
| Category | Transceiver |
| Language | English |
General safety precautions regarding antenna proximity, volume levels, power sources, and battery handling.
Lists the battery pack, antenna, handstrap, and belt clip included with the transceiver.
Instructions on how to attach the supplied antenna and related warnings.
Instructions for attaching the handstrap and belt clip to the transceiver.
Identifies and explains buttons, switches, and external connection jacks on the transceiver.
Explains the main elements and layout of the transceiver's screen.
Details other buttons, keys, and the DC power jack.
Explains the specific indicators and symbols shown on the transceiver's screen.
Detailed explanation of various indicators like frequency, mode, RIT/VXO, and power.
Instructions for charging batteries and important safety warnings.
Details on battery life, operating period, and charging methods.
Using optional cables for operation and installing alkaline batteries in the case.
Steps to turn the transceiver on and initial status displays.
How to input frequencies using the keypad.
How to select frequency tuning step increments using set mode.
Alternative methods for frequency adjustment using DIAL and MHz STEP.
How to choose memory channels and activate the key lock function.
Basic procedure for receiving and transmitting signals.
How to tune into FM broadcast and aircraft communication frequencies.
How to set the narrow FM mode for specific regions.
Explains and activates the RIT/VXO function for the 1200 MHz band.
How to set specific receive modes like 50 MHz AM.
Basic steps for using repeaters, including duplex and tone settings.
Details on transmitting DTMF and 1750 Hz tones.
How to detect subaudible tones required for repeater access.
How to set subaudible tones for repeater access.
How to set the transmit frequency offset for repeaters.
How the auto repeater function activates settings based on frequency.
Overview of memory channels, their capacity, and programmable data.
Step-by-step guide to storing data into memory channels.
Moving memory contents to VFO or other channels.
How to erase memory channel contents.
How to assign names (up to 6 characters) to memory channels.
How to store DTMF codes in memory.
Methods for transmitting DTMF codes, including manual and memory use.
How to adjust DTMF transmission speed for compatibility.
Explains Full, Programmed, Memory, and Skip Scan types.
How to perform full and programmed scans.
How to perform memory scans, including skip channels.
How to set memory channels to be skipped during scans.
How to set scan pause conditions (pause or timer).
How tone squelch works and how to set it.
Setting subaudible tones for tone squelch operation.
How to detect subaudible tone frequencies for repeater access.
Using subaudible tones for a calling/paging function.
Accessing help and customizing settings via initial set mode.
Explains simple mode for optional remote microphone functions.
Setting auto power off, beep tones, backlighting, and power saver.
Adjusting voltage display, contrast, and resetting the CPU.
Transferring data between transceivers or to a PC, and error handling.
Lists common problems, their causes, and solutions with references.
Covers frequency coverage, output power, and operating modes.
Details on transmitter output, modulation, and receiver sensitivity.
Lists battery packs, speaker-microphones, chargers, cables, software, and cases.
Diagrams illustrating transitions between VFO, CALL, and MEMORY modes.
Diagrams showing options available in SET MODE and INITIAL SET MODE.
