What to do if the function display shows erroneous information on Icom Transceiver?
If the function display shows erroneous information on your Icom Transceiver, the CPU may be malfunctioning. Reset the CPU.
What causes the received audio to break off at the other station during tone squelch operation on Icom Transceiver?
If the received audio breaks off at the other station during tone squelch operation with your Icom Transceiver, the transmitter’s microphone gain may be too high. Select low microphone sensitivity in set mode.
Crucial warnings and precautions for safe operation and handling of the transceiver.
Covers frequency coverage, memory channels, operating temperature, and power requirements.
Details on transmitter output, deviation, and receiver sensitivity and selectivity.
Top and bottom view layouts of the main unit printed circuit board.
Instructions for removing the transceiver's top cover, bottom cover, and main unit.
Detailed description of receiver RF circuits for various frequency bands and IF stages.
Description of demodulator, squelch, and audio frequency circuits.
Description of microphone, transmitter, APC, and power amplifier circuits.
Explanation of frequency synthesizer VCOS and PLL circuit operation.
Description of the transceiver's power supply distribution and regulation circuits.
Details the allocation and function of CPU ports for various controls.
Required equipment, JIG cable, and steps to enter adjustment mode.
Procedures for adjusting frequency and transmit output power.
Procedures for adjusting deviation and modulation balance for FM and DV modes.
Procedures for adjusting receiver sensitivity, S-meter, and squelch.
Procedure for adjusting the diversity reception parameters.
List of electrical components and parts for the control and main units.
Lists mechanical parts for chassis, main unit, and control unit.
Lists included accessories and physical dimensions for the HM-133 microphone.
Top and bottom view layouts of the main unit printed circuit board.
Board layouts for HM-133 microphone, VR1, and VR2 units.
Block diagram illustrating the functional blocks on the left side of the transceiver.
Block diagram illustrating the functional blocks on the right side of the transceiver.
Voltage distribution schematic for the control unit.
Voltage distribution schematics for various sections of the main unit.
List of electrical and mechanical components for the HM-133 microphone.
Physical dimensions and voltage diagram for the HM-133 microphone.
Voltage diagram and parts list for the optional UT-123 unit.
Board layout diagrams for the optional UT-123 unit.
General| Output Power | 50W (VHF), 35W (UHF) |
|---|---|
| Modulation | FM |
| Power Supply | 13.8 V DC |
| RF Power output | 50W (VHF), 35W (UHF) |
| Mode | FM |
| Receiver Sensitivity | 0.16 μV (12dB SINAD) |
| Audio Output | 2 W |
To Next Page
