Icom IC-A20 User Manual

Details the top panel controls including power, antenna, and audio connections.

Explains the side panel features like function switch, PTT, and battery release.

Details front panel elements such as display, keyboard, speaker, and microphone.

Describes the indicators and readouts on the transceiver's function display.

Covers external connections for DC power, microphones, and antennas.

Illustrates how to connect the transceiver for battery charging using various chargers.

Provides instructions for charging the battery pack using the CM-16U wall charger and other methods.

Explains how to set frequencies using emergency recall, up/down keys, and numerical keys.

Details the receiving process, including squelch, volume, and ANL switch operations.

Guides on how to transmit, including PTT, power switch, and microphone usage.

Instructions on how to retrieve stored memory channels using MR key and channel numbers.

Steps for programming new frequencies into memory channels.

Details how to perform a full scan of the COM BAND frequency range.

Explains how to scan through programmed memory channels.

Describes how to scan memory channels while skipping locked-out channels.

Steps to program transmit and receive frequencies for duplex operation.

Instructions on how to use the transceiver in duplex mode for simultaneous transmit/receive.

Explains the various indicators used for VOR navigation display.

Notes on specific VOR indicator displays like 'LOC'.

Details how to determine aircraft position by crosschecking VOR station radials.

Guides on setting course and using indicators for navigation to a VOR station.

How to activate and deactivate the key lock feature to prevent accidental key presses.

Explains how to enable/disable beep tones for key presses and adjust volume.

Procedure to reset the transceiver's microprocessor and clear memory channels.