To Next PageTo Next PageWhy internal tuner is bypassed immediately after tuning is started on Kenwood Transceiver?
If the internal tuner is bypassed immediately after tuning is started on your Kenwood Transceiver, adjust the antenna system to lower the SWR.
Why Kenwood Transceiver has poor receive sensitivity?
If you're not receiving signals or the receive sensitivity seems poor on your Kenwood Transceiver, first, turn the SQL control counterclockwise. Ensure the Attenuator function is off by pressing [ATT/PRE/ ANT1/2] until “ATT” and “PRE” disappear, and release the Mic [PTT]. Also, check if the correct antenna connector (ANT 1 or ANT 2) is selected and the preamplifier is on.
What does 'HELLO' message mean on Kenwood Transceiver during transmission?
If your Kenwood Transceiver displays the 'HELLO' message and reverts to reception mode when you try to transmit, check the antenna connection and correct it if necessary. Reduce the SWR of the antenna system. Ensure the input voltage is within 11.7 to 15.8 V DC, or use a 12 to 16 V battery. Use a DC power supply with a current rating of more than 20.5 A at 13.8 V DC; for the TS-480HX, two DC power supplies are required to transmit.
What to do if Kenwood Transceiver does not respond to key combinations?
If your Kenwood Transceiver isn't responding correctly to key combinations or control adjustments, ensure you are following the procedures precisely. Check if the Frequency Lock function is ON and, if so, switch it OFF by pressing [MENU/ F.LOCK] for 1 second. If problems persist, perform a Partial Reset, and if necessary, a Full Reset.
How to unlock frequency on Kenwood Transceiver?
If you cannot change the frequency on your Kenwood Transceiver, the Frequency Lock function or Lock All function may be ON. Press [MENU/ F.LOCK] for 1 second to turn the Frequency Lock function OFF. The “ ” icon should disappear.
Why can't I transmit with my Kenwood Transceiver?
If you cannot transmit with your Kenwood Transceiver, even when pressing Mic[PTT], or transmissions result in no contacts, ensure the microphone plug is fully inserted into the MIC connector. Turn off the power first, check the MIC connector for obstructions, and then firmly plug in the connector. Verify that the Transmit Inhibit function is OFF by changing Menu No. 55 to OFF. Confirm that a voice mode is selected by pressing [MODE]. Adjust the settings in Menu No. 20. Select the correct antenna connector by pressing [ATT/PRE/ ANT1/2] for 1 second.
Why attempts at controlling the Kenwood Transceiver with the computer have failed?
If attempts at controlling the Kenwood Transceiver with the computer have failed, check the cable and cable connections. Use the same parameters in the terminal program and the transceiver. Check Menu No. 56.
What does “TEMP–HI” message mean on Kenwood Transceiver?
If “TEMP–HI” appears and “CHECK” in Morse code sounds on your Kenwood Transceiver, stop transmitting and let the transceiver cool down for a while.
What to do if AT does not finish successfully on Kenwood Transceiver?
If the AT does not finish successfully on your Kenwood Transceiver adjust the antenna system to lower the SWR.
Why are received signals unintelligible on my Kenwood Transceiver?
If received signals are totally unintelligible on your Kenwood Transceiver, select the correct modulation mode by pressing [MODE] or [MODE] for 1 second.
General| Antenna Impedance | 50 ohms |
|---|---|
| Supply Voltage | 13.8 V DC ±15% |
| Current Drain (Receive) | 1.5 A |
| Antenna Connector | SO-239 |
| Operating Temperature | -10°C to +50°C |
| Modes | SSB, CW, AM, FM, FSK |
| Antenna Tuner | Built-in |
| Current Drain (Transmit) | 20.5 A |
| Power Output | 100 watts |
| RF Output Power | 100 watts |
Step-by-step instructions for removing the torque changeover lever from the unit.
Instructions for correctly mounting the torque changeover lever onto the unit.
Explanation of the reference signal generation circuit and its role in PLL frequency control.
Description of the local oscillators (LO1, LO2) and carrier generation circuits.
Explanation of the AF signal processing path from detection to audio output.
Overview of the transmitter circuit, including power output types and unit differences.
Detailed description of components within the RF unit, including their functions and conditions.
Detailed component list and function description for the Final Unit (A/3).
Pin assignments, I/O functions, and specification details for the main microcomputer.
Comprehensive list of parts used in the RF unit, including part numbers and descriptions.
Comprehensive list of parts used in the Final Unit, including part numbers and descriptions.
List of essential test equipment required for performing adjustments on the transceiver.
Initial settings for knobs and switches as per service manual requirements.
Instructions and requirements for updating the transceiver firmware using a PC.
Component placement diagram for the RF unit's main circuit board.
Component layout for the TX-RX unit, detailing connections and part locations.
Component placement diagram for the 100W Final Unit (A/3), showing the layout of components.
General specifications including mode, memory channels, supply voltage, and operating environment.
Detailed transmitter specifications including frequency range, output power, and modulation characteristics.
Detailed receiver specifications including circuit type, sensitivity, selectivity, and audio output.
Detailed pin functions and descriptions for the RF unit's connectors.
Terminal functions for the TX-RX unit, covering various input/output signals and control lines.
Terminal functions for the sub unit, detailing connections to other main units.
