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General| Brand | Icom |
|---|---|
| Model | IC-T21A |
| Category | Transceiver |
| Language | English |
Details transceiver modes, tuning steps, memory channels, and power requirements.
Lists output power, modulation system, frequency deviation, and emissions.
Details receiver sensitivity, selectivity, and audio output characteristics.
Internal component layout for the IC-T21A/E model.
Internal component layout for the IC-S21A/E model.
Detailed description of the transceiver's receiver circuitry.
Detailed description of the transceiver's transmitter circuitry.
Description of the Phase Locked Loop (PLL) circuits for frequency control.
Description of the transceiver's power supply and voltage lines.
Pinout and function of CPU ports for control and data.
Procedures for adjusting the Phase Locked Loop (PLL) circuits.
Procedures for adjusting receiver sensitivity and S-meter.
Procedures for adjusting transmitter output power and deviation.
List of mechanical chassis components and their order numbers.
List of optional accessories and their part numbers.
PCB layout for the Logic Unit.
PCB layouts for the 1F and 2F Units.
PCB layouts for the 3F Unit and UHF-VCO Board.
PCB layout for the Logic Unit (IC-S21A/E).
PCB layouts for the 1F and 2F Units (IC-S21A/E).
PCB layout for the 3F Unit (IC-S21A/E).
PCB layouts for common boards and units.
Functional block diagram for the IC-T21A/E model.
Functional block diagram for the IC-S21A/E model.
Voltage distribution diagram for the IC-T21A/E model.
Voltage distribution diagram for the IC-S21A/E model.
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