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General| Brand | Icom |
|---|---|
| Model | IC-820H |
| Category | Transceiver |
| Language | English |
Describes the frequency check and tone switches for squelch and signal monitoring.
Details the main/sub band exchange and function switches for device operation.
Explains the dial lock function and other operational controls on the transceiver panel.
Covers sub band access, SSB/CW mode selection, and FM mode/repeater functions.
Details the tuning dial operation and quick tuning functions for frequency adjustment.
Explains the scan switch and other panel functions for device operation.
Describes memory channel navigation and writing functions.
Explains transferring memory contents and exchanging VFOs.
Details the VFO switch for mode selection and call switch for channel access.
Explains the IF shift and RIT controls for signal adjustment.
Describes indicators for tone squelch, duplex operation, and scanning.
Explains indicators for main/sub band frequencies and memory channels.
Covers indicators for operating mode, dial lock, and RIT function.
Details sub band S-meter, access, and satellite mode indicators.
Details connections for 430 MHz and 144 MHz antennas and DC power.
Covers CW side tone, accessory, external speaker, ground, and key jacks.
Explains CI-V remote control and 144 MHz antenna connectors.
Details the pin assignments and specifications for the accessory socket.
Describes the optional microphone controls and internal wiring.
Provides guidance on unpacking the transceiver and selecting an operating location.
Details the installation of PL-259 and Type-N antenna connectors.
Instructions for connecting a microphone to the front panel.
Diagrams for power supply, antenna, grounding, and key jack connections.
Guides for connecting various DC power supplies to the transceiver.
Instructions for connecting the transceiver to a vehicle's 12V battery.
Details headphone use and the MB-23 carrying handle.
Covers preamplifiers, computer control, data units, and external speakers.
Guides for connecting linear amplifiers and AFSK terminal units.
Explains CI-V connection via CT-17 and data formats for control.
Steps for first-time power application and CPU resetting.
Guides for setting controls and switches after initial power-up.
Steps for operating the transceiver in FM mode.
Steps for operating the transceiver in SSB mode.
Instructions for operating the transceiver in CW mode.
Steps for operating the transceiver using AFSK.
Describes the features and differences of main and sub bands.
Guides for exchanging main/sub bands and accessing the sub band.
Explains the transceiver's VFOs and their usage.
Compares VFO mode and memory mode functionalities.
Guides for setting frequencies and using quick tuning steps.
Details how to select and set tuning steps for different modes.
Explains how to use the RIT or SHIFT control as a sub tuning dial.
Describes how to activate and use the dial lock function.
Details squelch, RIT, and IF shift controls for signal adjustment.
Explains indicators for TX/RX, phones, check, and lock functions.
Covers attenuator, noise blanker, preamplifier, and AGC functions.
Introduces the transceiver's scan capabilities.
In-depth explanation of RIT and IF shift functions.
Describes the FM center indicator for signal reception.
Details transmit indicators, tone, FM/RPT, split, and S/RF meter.
Covers power output settings, speech compressor, and microphone gain.
Guides for setting the speech compressor and RF output power.
Explains split frequency operation and tone squelch setup.
Steps for operating the transceiver with a repeater.
Details subaudible tone settings and one-touch repeater function.
Guides for setting offset frequencies for repeater operation.
Explains tone scan and auto repeater features.
Describes the transceiver's memory channels and their capacity.
Guides for changing frequencies and modes in memory channels.
Steps for selecting memory channels for operation or programming.
Instructions for programming frequencies and modes into memory channels.
Explains how to transfer memory data to VFOs.
Guides for clearing memory channels and scan edge frequencies.
Details how to allocate memory channels between 144 MHz and 430 MHz bands.
Instructions for accessing the call channel for quick frequency recall.
Guides for programming frequencies, modes, and tones into the call channel.
Describes satellite modes B and J and communication requirements.
Highlights controls and displays relevant to satellite operation.
Provides crucial notes on power, mode confirmation, and preamplifiers.
Steps for selecting a satellite and confirming its operating mode.
Explains satellite VFO and memory modes for storing frequencies.
Guides for selecting satellite mode and programming memory channels.
Describes the three scan types: programmed, memory, and mode select.
Covers presetting memory channels and squelch conditions for scanning.
Instructions for operating programmed scans between edge channels.
Guides for performing memory and mode select scans.
Explains how to access and operate the F-set and L-set modes.
Covers display intensity and attenuator activation settings.
Details settings for preamplifiers, CW break-in, and FM indicators.
Covers settings for sub band S-meter and sub band audio during transmit.
Covers beep settings, scan resume, and scan speed configurations.
Details fine tuning indications and indicator settings.
Explains how to set the variable range for the RIT function.
Covers sub tuning dial assignment and optional voice synthesizer settings.
Details CI-V address selection and baud rate settings.
Covers CI-V transceive operation and memory channel allocation.
Provides instructions for opening the transceiver to access internal units.
Guides for installing the UT-50 tone squelch unit.
Instructions for installing the FL-132 CW narrow filter.
Guides for installing the UT-36 voice synthesizer unit.
Instructions for installing the CR-293 crystal unit.
Details CW side tone and headphone audio output settings.
Covers modulation input sensitivity and compressor level adjustments.
Details baud rate selection and band output settings for AF/squelch.
Covers ALC and frequency up/down input selection.
Shows internal components of the main unit and adjustment points.
Illustrates internal components of RF and PA units.
Provides solutions for common issues like no power, no sound, or low sensitivity.
Guides for replacing fuses and resetting the CPU.
Details the CPU backup battery and its replacement.
Provides general specs, frequency coverage, modes, and memory details.
Details receiver systems, IF frequencies, and sensitivity.
Covers transmitter output power, spurious emissions, and impedance.
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