What to do if the Icom IC-208H Transceiver frequency cannot be set?
If you cannot set the frequency on your Icom Transceiver, it might be because the frequency lock function is activated (turn the function OFF), or priority watch is paused on the watching frequency (push [M/CALL•PRIO] for 1 second to cancel the watch).
How to fix Icom IC-208H Transceiver if frequency cannot be set via the microphone?
If you cannot set the frequency via the microphone on your Icom Transceiver, the frequency lock function may be activated (turn the function OFF), the microphone keypad lock function may be activated (push [FUNC] then [SQLZ #(16KEY-L)] to deactivate the microphone keypad lock function), or priority watch is paused on the watching frequency (push [M/CALL•PRIO] for 1 second to cancel the watch).
Why my Icom IC-208H Transceiver does not turn on?
Your Icom Transceiver might not be turning on due to several reasons: the power connector may have a poor contact (check the connector pins), the polarity of the power connection might be reversed (re-connect the power cable observing the proper polarity), or the fuse might be blown (replace the fuse if damaged; check the cause first).
What to do if no sound comes from the Icom Transceiver speaker?
If no sound is coming from the speaker of your Icom Transceiver, check these possible causes: the volume may be too low (rotate [VOL] clockwise), the audio mute function may be activated (push any switch or key to deactivate it), the squelch may be set too high (set the squelch level to the threshold), or a selective call or squelch function like pocket beep or tone squelch may be active (turn the appropriate function OFF).
How to fix low sensitivity on Icom IC-208H Transceiver?
If the sensitivity is low and only strong signals are audible on your Icom Transceiver, it could be due to a poor contact or short circuit in the antenna feedline or connector (check and replace the feedline or resolder the antenna connector if needed), or the squelch attenuator function might be activated (set [SQL] between 10–12 o’clock position).
Why Icom IC-208H repeater cannot be accessed?
If you cannot access a repeater with your Icom Transceiver, it could be due to a wrong offset frequency being programmed (correct the offset frequency), or a wrong subaudible tone frequency being programmed (correct the subaudible tone frequency).
What to do if Icom Transceiver scan does not operate?
If the scan function does not operate on your Icom Transceiver, it could be because the squelch is open (set the squelch to the threshold point), only 1 memory channel is programmed or other channels are set as skip channels (program other memory channels or cancel the memory skip function in the desired channels), or priority watch is activated (cancel the watch).
Why no contact possible with another station on Icom IC-208H Transceiver?
If you cannot contact another station with your Icom Transceiver, it may be because the other station is using tone squelch (turn the tone squelch function ON), or the transceiver is set to duplex (set to simplex).
Why does my Icom IC-208H Transceiver transmission is automatically cut off?
If the transmission on your Icom Transceiver is automatically cut off, the time-out timer may be activated (set the timer to OFF).
What causes erroneous information on the function display of Icom Transceiver?
If the function display on your Icom Transceiver shows erroneous information, the CPU may be malfunctioning, and you may need to reset the CPU.
Top view of the control unit's printed circuit board.
Top view of the main unit's printed circuit board.
Bottom view of the control unit's printed circuit board.
Bottom view of the main unit's printed circuit board.
Step-by-step guide for disassembling the main unit.
Step-by-step guide for disassembling the control unit.
Detailed description of the transceiver's receiver circuitry.
Detailed description of the transceiver's transmitter circuitry.
Description of the Phase-Locked Loop (PLL) circuits.
Description of miscellaneous circuits within the transceiver.
Description of the transceiver's power supply circuits.
Details on the function of each port on the main CPU.
Required test equipment and mode entry for adjustments.
Explanation of display items and adjustment sequences.
Software adjustment procedures for transmitting parameters.
Software adjustments for both transmitting and receiving.
Software adjustment procedures for receiving parameters.
List of parts for the control unit.
List of parts for the VCO unit.
List of parts for the main unit.
Mechanical components of the chassis part.
Mechanical components of the main unit.
Mechanical components of the VCO board.
Mechanical details of included accessories.
Diagrams and symbols for transistors and FETs used.
Diagrams and symbols for diodes used.
Top view layout of the control unit's PCB.
Bottom view layout of the control unit's PCB.
Top view layout of the main unit's PCB.
Bottom view layout of the main unit's PCB.
Top view layout of the VCO board's PCB.
Bottom view layout of the VCO board's PCB.
Voltage distribution diagram for the control unit.
Voltage distribution diagrams for the main unit.
General| Mode | FM |
|---|---|
| Voltage | 13.8V DC |
| Channels | 200 |
| Display | LCD |
| Type | Mobile |
| Frequency Range | 144-148 MHz |
| Tone Squelch | CTCSS |
| Modulation | FM |
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