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General| Brand | Icom |
|---|---|
| Model | IC-2GXAT |
| Category | Transceiver |
| Language | English |
Critical safety precautions for operating the transceiver.
Guidelines and examples for ordering replacement parts.
Important notes and precautions for performing repairs on the transceiver.
General operating parameters and specifications for the transceiver.
Technical specifications for the transmitter section of the transceiver.
Technical specifications for the receiver section of the transceiver.
Top view diagram identifying components on the Logic Unit board.
Top view diagram identifying components on the Main Unit board.
Top view diagram identifying components on the RF Unit board.
Step 1 of disassembly: opening the front panel.
Step 2 of disassembly: separating panels and removing main unit.
Step 3 of disassembly: removing RF unit.
Step 4 of disassembly: removing logic unit.
Detailed explanation of the receiver circuit blocks and their functions.
Explanation of the second IF and demodulator circuits.
Explanation of AF amplifier and squelch circuit operations.
Overview of the transmitter circuit blocks and their operations.
Explanation of the Phase-Locked Loop (PLL) circuits and their role.
Explanation of the programmable divider and phase detector circuits.
Explanation of charge pump and loop filter circuits within the PLL.
Description of voltage lines and other specific circuits.
Explanation of the subaudible tone encoder circuit for repeater access.
Detailed list of CPU and Data Expander port allocations.
Procedures for adjusting the PLL lock voltage and reference frequency.
Procedures for adjusting receiver sensitivity and S-meter.
Procedures for adjusting output power, frequency deviation, and tone deviations.
List of components for the Logic Unit boards.
List of components for the Main Unit boards.
List of components for the RF Unit.
List of components for IC-2GXAT/ET Logic and Main Units.
List of mechanical parts for the transceiver chassis.
List of optional accessories and their part numbers.
Top view layouts for the Logic Unit boards.
Top view layouts for the Main Unit boards.
Top view layouts for the RF Unit board.
Top view layouts for APC, DCJ, and VCO boards.
Top view layout of the Main-B Unit board.
Top view layout of the Logic-A Unit board.
Circuit diagram and layout for the UT-86 Tone Squelch Unit.
Circuit diagram and layout for the UT-49 DTMF Decoder Unit.
Overview of Icom Inc. and its international branch contact information.
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