The service manual for the Icom VHF Air Band Transceivers IC-A22/E and IC-A3/E provides detailed information on specifications, circuit descriptions, adjustment procedures, and parts lists for setup and operation. It also includes troubleshooting guidelines, such as ensuring the transceiver is disconnected from its power source before disassembly and using insulated tools for adjustments to avoid damage.
Overview
This service manual provides detailed service information for the IC-A22/E and IC-A3/E VHF air band transceivers. It covers five versions of each model, including those for the USA, Europe, Australia, and the UK. The manual includes specifications, circuit descriptions, adjustment procedures, parts lists, and diagrams for various units within the transceivers. It also provides safety warnings and repair notes to ensure proper handling and maintenance of the devices.
Specifications
- Frequency coverage (MHz): Tx 118.000-136.975, Rx Navigation 108.000-117.975, Weather 161.650-163.275
- Mode: Tx/Rx AM (6KOOA3E), Rx FM (16KOG3E; for weather channel) U.S.A. version only
- Number of memory channels: 50
- Channel spacing: 25 kHz
- Frequency stability: 0.002% (-10°C to +50°C; +14°F to +122°F)
- Antenna impedance: 50 Q (nominal)
- Power supply requirement: 12-15 V DC (negative ground)
- Usable temperature range: ~10°C to +50°C; +14°F to +122°F
- Current drain (at 12 V DC): Transmit 1.0 A typical, Rated audio 400 mA max., Squelched 55 mA typical
- Dimensions: 57 (W)x153 (H)x35 (D) mm; 2 '/, (W)x6 Yeo (H) x1 %/, (D) in (Projections not included)
- Weight: 465 g (16.4 oz) with CM-166 and antenna
- Output power (at 12 VDC): 5.0 W typical (PEP power), 1.5 W typical (Carrier power)
- Modulation system: Low level modulation
- Microphone impedance: 150
- Spurious emissions: +60 dB
- Receive system: Double-conversion superheterodyne
- Intermediate frequency: 1st 35.8 MHz, 2nd 455 kHz
- Sensitivity: Less than 1 pV for 6 dB S/N (with 1 kHz, 30 % modulation)
- Tight squelch sensitivity: Less than 6.3 pV
- Selectivity: More than 8 kHz/—6 dB, Less than 25 kH2/-60 dB
- Spurious response rejection: -—60dB
- Noise and hum: -26 dB
- Audio output power: 600 mW with an 8 © load
- Audio output impedance: 8Q
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Service manual (PDF – 11.4 MB)
Icom IC-A22/IC-A22E Service Manual PDF: Guide for troubleshooting, repair, and calibration. File size: 11.4 MB.
- Brand: Icom-ic-a22-ic-a22e-service
- Model: MANUAL
- Type: Service manual
- File size: 11.4 MB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Download MANUAL service manual (PDF)
Icom IC-A22 / IC-A22E Service Manual Overview
The Icom IC-A22 and IC-A22E are compact, handheld VHF transceivers designed primarily for aviation communication. These radios provide reliable, clear voice transmission and reception, making them essential tools for pilots and aviation professionals. The service manual offers detailed technical information, repair procedures, and maintenance guidelines to ensure optimal performance and longevity of the device.
Main Features and Specifications
- Frequency Range: 118.000 to 136.975 MHz (VHF Air Band)
- Power Output: 5 Watts
- Channel Capacity: 200 memory channels
- Display: LCD with backlight for easy readability
- Battery: Rechargeable NiMH or alkaline battery options
- Compact and lightweight design for portability
- Built-in noise reduction circuitry for clear audio
- Emergency channel monitoring (121.5 MHz)
Basic Usage and Operation Tips
To operate the IC-A22/IC-A22E, turn on the device using the power knob and select the desired frequency or memory channel. Adjust the volume to a comfortable level before transmitting. Always perform a radio check before flight to confirm proper communication. Use the scan function to monitor multiple channels efficiently. Remember to recharge the battery regularly to avoid power interruptions during critical operations.
Troubleshooting and Maintenance Notes
If you experience weak transmission or reception, first check the antenna connection and battery charge level. Replace or recharge batteries as needed. For audio issues, verify the speaker and microphone connections. Regularly clean the device exterior and connectors to prevent dust accumulation. Refer to the service manual for detailed circuit diagrams and step-by-step repair instructions. Avoid unauthorized modifications to maintain device integrity.
Safety Reminder
Always operate the Icom IC-A22/IC-A22E in accordance with aviation regulations and guidelines. Avoid using the radio in hazardous environments or during critical phases of flight unless necessary. Ensure the device is securely mounted or held to prevent accidental drops. Keep the manual accessible for quick reference to safety and operational procedures.