The IC-22A is a rugged VHF transceiver with dual conversion receiver, 22 crystal‑controlled channels and up to 10 W transmit power. It features a solid‑state design, high‑Q resonators, and a built‑in speaker and dynamic microphone.
The manual provides detailed specifications, unpacking and installation instructions, control function descriptions, and service test points for maintenance and troubleshooting.
| Frequency Coverage | 144.00 to 146.00 MHz or 146.00 to 148.00 MHz |
|---|---|
| Number of Transistors and Diodes | 22 |
| Power Supply Voltage | DC 13.8 V ±15 % negative ground |
| Transmit Power (HI) | 10 W average 2.1 A |
| Transmit Power (LOW) | 1 W average 1.2 A |
| Receive Current | 180 mA average |
| Audio Output Impedance | 50 Ω |
| Physical Size | 2.9/32" high × 6‑1/8" wide × 8‑1/2" depth |
| Frequency Control | Crystal (18 MHz) multiplied ×8 |
| Modulation Type | Variable reactance phase modulation |
| Antenna Input Impedance | 30 Ω |
It operates from a regulated 13.5 VDC source with a negative ground.
The unit provides 22 crystal‑controlled channels, giving a total of 44 crystal sockets for transmit and receive.
A 500 Ω dynamic microphone with a normal output of about 6 mV is included.