How to unlock the dial on Icom Transceiver?
If the operating frequency is not properly changed by rotating MAIN DIAL on your Icom Transceiver, the Dial Lock function may be activated. Hold down SPEECH to turn the Dial Lock function off.
How to turn on Icom Transceiver if it does not power on?
If your Icom Transceiver does not turn on, first ensure the DC power cable is properly connected. If it is, check that the external power supply is turned on. Also, inspect the DC power cable fuses or circuitry fuse; if they are blown, identify and fix the underlying issue before replacing the fuse.
What to do if there is no sound from the Icom Transceiver speaker?
If you are not hearing any sound from the Icom Transceiver speaker, first, check the audio level and adjust it by rotating AF RF/SQL clockwise. Ensure that the squelch is open by rotating AF RF/SQL to the 12 o’clock position. If using Dualwatch, verify that the Dualwatch function is turned on. Also, check that headphones are disconnected, and the Mute function is off. Finally, inspect the external speaker cable for any defects.
Why is there no power output or low output power on my Icom Transceiver?
If you're experiencing no power output or low output power on your Icom Transceiver, make sure that the operating frequency is within the ham band. Adjust the microphone gain in MIC GAIN, and test the microphone and [MIC] connector. Ensure the antenna SWR is less than 3:1, and tune the antenna by holding down TUNER for 1 second. Also, adjust the RF POWER in the Multi-function menu.
How to improve Icom Transceiver sensitivity if only strong signals are heard?
If your Icom Transceiver's sensitivity is too low, and you're only receiving strong signals, first, turn off the attenuator in the Multi-function key group. Then, open the squelch by rotating AF RF/SQL to the 12 o’clock position. Check the antenna and coaxial cable for defects, and ensure you are using an antenna suitable for the selected band. Finally, tune the antenna by holding down TUNER.
Why does my Icom Transceiver automatically switch to transmit?
If your Icom Transceiver automatically switches to transmit while receiving, the VOX function may be on. Turn off the VOX function in the Multi-function menu. If the issue persists, adjust the VOX gain.
What to do if I cannot contact another station with my Icom Transceiver?
If you cannot contact another station with your Icom Transceiver, even if receiving and transmitting seem normal, the Split function might be activated. Turn off the Split function by pushing SPLIT. Also, check if the RIT or TX function is on, and if so, turn them off by pushing RIT or TX.
Why is the received audio unclear or distorted in SSB mode on my Icom Transceiver?
If the received audio in SSB mode is unclear or distorted on your Icom Transceiver, the incorrect sideband may be selected. Toggle between USB and LSB. Additionally, check if the PBT function is activated, and if so, rotate TWIN PBT CLR to clear the settings.
What does 'OVF' displayed on my Icom Transceiver mean and how do I fix it?
If “OVF” is displayed on your Icom Transceiver, it means an excessively strong signal is being received. Rotate AF RF/SQL counter clockwise. You can also turn on the attenuator, turn off the Preamplifier (P.AMP OFF), or turn on the Digital Selector function.
Why is the transmit signal unclear or distorted in SSB mode on my Icom Transceiver?
If the transmit signal is unclear or distorted in SSB mode on your Icom Transceiver, the transceiver’s microphone gain might be too high. Adjust the MIC GAIN level so that the meter reading swings between 30 and 50% of the ALC scale.
Critical warnings regarding power, environment, and RF signal application.
Required information for ordering replacement parts: part number, name, model, and quantity.
Essential guidelines for safe and effective repair procedures, including precautions and tool usage.
Key operational parameters including frequency, modes, power, temperature, dimensions, and weight.
Details on output power, modulation, spurious emissions, carrier/sideband suppression, and microphone impedance.
Details on receive system, sensitivity, selectivity, spurious rejection, audio output, and RIT range.
Parameters for antenna tuner matching impedance, tuning time, and accuracy.
Top view diagram showing the PA and Tuner units with labeled components.
Top view diagrams of the Main, Digisel-A, and Digisel-B units with labeled components.
Description and specifications for PHONES, MIC, and ELEC-KEY connectors on the front panel.
Details of various connectors on the rear panel: SEND, ALC, METER, TUNER, DC, X-VERTER, REF IN, REMOTE, EXT KEYPAD.
Pin assignments and specifications for ACC 1 and ACC 2 connectors on the rear panel.
Details of rear panel connectors for RX ANT OUT/IN, KEY, and EXT SP A/B.
Required equipment and connection diagrams for performing adjustments.
Step-by-step instructions on how to enter the adjustment mode using front panel controls.
Explanation of key functions (Y, Z, DIAL, SET, EXIT) used for navigating and modifying adjustment values.
Procedures for adjusting TX/ID parameters, including VDL, FINAL, DRIVER, and SWR.
Procedures for adjusting tuner voltage reference and frequency reference.
Procedures for adjusting total gain and S-meter level for receive sensitivity.
Procedures for adjusting TX power output (HF, 50 MHz), AM carrier rate, ALC, drive gain, SWR meter, and Id APC.
Procedures for adjusting tuner voltage reference and reference frequency.
Procedure for performing the Refulk adjustment.
Procedure for performing the DIGI-SEL ALL adjustment.
List of components for the main unit, including part number, description, and location.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
Continuation of the parts list for the main unit.
List of mechanical parts for the chassis unit, including part number, description, and quantity.
List of mechanical parts for the main unit, including part number, description, and quantity.
Continuation of the list of mechanical parts for the main unit.
Board layouts for MIC, JACK, MULTI, USB, VR, and PBT units.
Top view layout of the PC board for the Main Unit B-8536F.
Bottom view layout of the PC board for the Main Unit B-8536F.
Block diagram of the Digisel-A unit, showing its internal components and signal flow.
Block diagram of the Digisel-B unit, showing its internal components and signal flow.
Block diagram of the BPF-A unit, illustrating its circuitry.
Block diagram of the BPF-B unit, illustrating its circuitry.
Block diagrams for PA Unit, Tuner Unit, Main Unit (ALC/Regulator), and Chassis Unit.
Wiring diagram for the RF unit, showing connections between components and units.
Wiring diagram for the PA unit, showing internal and external connections.
Wiring diagram for the Tuner unit, illustrating its internal connections.
Wiring diagram for the Main Unit Chassis, showing connections to various modules.
Wiring diagram detailing main connections within the Main Unit.
Wiring diagram showing connections between the Main Unit and Digisel-A unit.
Wiring diagram showing connections between the Main Unit and Digisel-B unit.
Wiring diagram for the front unit, showing connections to the main unit and other modules.
Wiring diagram detailing the connections for the USB unit.
Wiring diagram detailing the connections for the SD unit.
Wiring diagram for the Jack unit, showing its connections.
Voltage diagram for the Display Unit, showing voltage levels at various points.
Continuation of the voltage diagram for the Display Unit.
Voltage diagram for the USB unit, indicating voltage levels for its components.
Voltage diagram for the SD unit, showing voltage levels at various points.
Voltage diagram for the Multi Unit, indicating voltage levels for its components.
Voltage diagram for the Mic Unit, showing voltage levels at various points.
Voltage diagram for the Jack Unit, indicating voltage levels for its components.
Voltage diagram for the VR Unit, showing voltage levels at various points.
Voltage diagram for the PBT Unit, indicating voltage levels for its components.
General| Receiver Type | Direct sampling |
|---|---|
| Number of Antenna Connectors | 2 |
| Type | HF/50 MHz Transceiver |
| IF DSP | Yes |
| Antenna Connector | SO-239 |
| Frequency Range | 0.030–60.000 MHz |
| Power Supply | 13.8 V DC ±15% |
| Modes | AM, FM |
| RF Output Power | 100 W |
| Display | 7-inch color |
| Weight | 8.5 kg |
| External Speaker Connector | 3.5 mm |
| USB Connector | Type B |
| Output Power | 100 W |
| Operating Temperature | -10°C to +60°C |
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