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General| Channels | 16 |
|---|---|
| RF Output Power | 5 W |
| Mode | FM |
| Frequency Range | 400-470 MHz |
| Power Output | 5W |
| Dimensions | 36 mm |
| Power supply requirement | 7.4V DC |
| Voltage | 7.4V |
Top and bottom views of the IC-F3/S main unit showing component placement.
Top and bottom views of the IC-F4/S main unit showing component placement.
Step-by-step guide for safely disassembling the transceiver chassis and main unit.
Procedure for installing optional units such as UT-80, UT-96, or UT-105.
Detailed explanation of receiver circuits including antenna switching, RF, mixer, and demodulator.
Explanation of transmitter circuits covering microphone amp, modulation, and power amplifier.
Description of PLL circuit for frequency stability and power supply circuit operations.
Details on CPU and expander IC port allocations for various functions.
Lists required test equipment and preparation steps for transceiver adjustments.
Procedure for adjusting PLL lock voltage for IC-F3/S models.
Procedure for adjusting trimmers for IC-F3/S models, including reference frequency and deviation.
Procedure for adjusting transmitter functions like DTCS wave form for IC-F3/S models.
Procedure for adjusting receiver squelch level for IC-F3/S models.
Procedure for adjusting PLL lock voltage for IC-F4/S models.
Procedure for adjusting trimmers for IC-F4/S models, including reference frequency and power.
Procedure for adjusting transmitter functions like FM deviation for IC-F4/S models.
Procedure for adjusting receiver squelch level for IC-F4/S models.
Comprehensive list of parts for IC-F3 and IC-F3S models, including main unit and VR board components.
Comprehensive list of parts for IC-F4 and IC-F4S models, including main unit and VR board components.
List of cabinet and chassis parts for IC-F3/S and IC-F4/S models.
List of available accessories for IC-F3/S and IC-F4/S, including batteries and belts.
Information on semiconductor components including transistors and FETs with symbols and views.
Information on semiconductor components including diodes with symbols and views.
Top and bottom views of the IC-F3/S main unit printed circuit board.
Layout diagram for the common VR board used in the transceiver.
Top and bottom views of the IC-F4/S main unit printed circuit board.
Block diagram illustrating the overall circuit configuration for the IC-F3/S.
Block diagram illustrating the overall circuit configuration for the IC-F4/S.
Schematic showing voltage distribution across the main unit and VR board for IC-F3/S.
Schematic showing voltage distribution across the main unit and VR board for IC-F4/S.
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