What to do if scan doesn't work on Kenwood Transceiver?
If the scan function isn't working on your Kenwood Transceiver, it might be due to an incorrectly set squelch. Try adjusting the SQL control to the point where background noise is just eliminated.
Why UP/DOWN buttons or Tuning control does not change the frequency on Kenwood Transceiver?
If the UP/DOWN buttons or the Tuning control aren't changing the frequency on your Kenwood Transceiver, the Frequency Lock function may be enabled. Press the F.LOCK button to disable it.
What to do if memory scan doesn't work on Kenwood TS-50S?
If the memory scan isn't working on your Kenwood Transceiver, consider these potential causes: * Ensure that you have stored data in at least two memory channels. * Verify that the memory channels you want to scan are not locked out; unlock them if necessary. * If you're using Group Scan, confirm that the channel you want to scan is within the current group, or select All-channel Scan.
What to do if Kenwood TS-50S Transceiver power on results in no display data and no sound?
If your Kenwood Transceiver shows no display and produces no sound when powered on, check the following: Ensure the DC power cable plug is fully inserted into the 13.8 V DC connector on the transceiver's rear panel. Also, inspect the fuse and replace it with a new one of the same rating if it's open. Finally, verify that the DC power supply is switched on.
Why received signals cannot be understood or demodulated on Kenwood TS-50S Transceiver?
If you're having trouble understanding or demodulating received signals on your Kenwood Transceiver, here are a few things to check: First, make sure the Receiver Incremental Tuning (RIT) function is activated by pressing the RIT button. Next, ensure the IF SHIFT control is in the center detent position. Lastly, verify that the standard 2.4kHz SSB filter is selected, and not the optional 0.5kHz filter.
General| Brand | Kenwood |
|---|---|
| Model | TS-50S |
| Category | Transceiver |
| Language | English |
Describes receiver frequency generation via PLL for SSB, CW, and FM modes.
Details the PLL circuit's reference frequency and its role in transceiver frequency determination.
Explains the reference oscillator circuit (fsto) and its frequency generation for the PLL.
Explains the LO2 circuit's function in generating frequencies for FM mode comparison.
Details the LO1 circuit's role in generating frequencies for FM mode comparison.
Describes the CAR circuit's frequency generation and signal mixing for local oscillation.
States the DDS is identical to the one used in the TS-950.
Explains the receiver's double conversion, IF stages, and signal paths in FM and SSB/CW modes.
Describes the receiver front-end signal path, including filters, amplifiers, and mixers.
Details the noise blanker circuits for noise suppression, including amplifiers and filters.
Explains the filter circuit's function based on control signals in SSB, CW, and FM modes.
Describes the detection circuit for SSB, AM, and CW signals, including envelope and capacitor coupling.
Details the FM detection circuit, focusing on the IF amplifier and discriminator.
Explains the squelch circuit's operation, including signal level detection and control.
Describes the signal strength meter circuit, including amplifier, detection, and digital output.
Explains the AGC circuit's function in controlling signal levels based on mode and switch settings.
Details the transmitter circuit's signal path from the microphone to the final amplifier.
Explains the ALC circuit's function in controlling transmitter power based on detected forward wave voltage.
Describes the power control circuit's role in regulating transmitter output power based on ALC and VSWR.
Details the protection circuit for preventing transistor damage from reflected wave voltage.
Explains the temperature protection circuit that reduces power to prevent overheating.
Describes the digital control circuit, including the microcontroller, EEPROM, and signal conversion.
Details the reset circuit, its function, and signal generation for the microcontroller.
Explains the backup circuit for data storage in the microcontroller and EEPROM using a lithium battery.
Describes the control circuit for PLL and DDS units, managing data output to the display frequency.
Explains the control circuit for the TX-RX unit, managing signal filtering and data display.
Details the analog-to-digital input circuit, explaining how switches control the A/D converter.
Describes the EEPROM's role in storing adjustment data and its read/write operations.
Explains the encoder circuit's mechanical operation and its interaction with the microcontroller.
Describes the busy signal monitoring and its role in busy stop indication.
Explains the dimmer control for the display lamp brightness.
Details the beep signal generation by the timer and its functions.
Describes the subtone frequency conversion from digital to analog using a resistor ladder.
Explains the AT control signal for bidirectional communication and tuning with the AT-300.
Lists various settings and their functions, including menu items and key operations.
Explains the functions of PF keys and their assignment to menu items.
Provides band data and configuration for RX BPF, TX LPF, and VCO.
Details the CPU block diagram and its components.
Shows terminal connection diagram and truth table for the extended I/O.
Details the EEPROM terminal connection diagram and block diagram.
Shows terminal connections, truth table, and function of the decoder IC.
Shows terminal connections and block diagram for the system reset IC.
Shows external view, maximum ratings, and characteristics of the final transistor.
Shows external view, maximum ratings, and characteristics of the drive transistor.
Shows component and foil side views of the LCD Assy.
Lists components for the Final Unit, including reference numbers, use, and description.
Lists components for the Digital Unit, including reference numbers, use, and description.
Lists components for the IF Unit, including reference numbers, use, and description.
Lists components for the PLL Unit, including reference numbers, use, and description.
Lists components for the Filter Unit, including reference numbers, use, and description.
Lists components for the TX-RX Unit, including reference numbers, use, and description.
Lists components for the VCO, including reference numbers, use, and description.
Lists components for the DDS, including reference numbers, use, and description.
Lists components for the ALC, including reference numbers, use, and description.
Lists components for the DSST, including reference numbers, use, and description.
Lists components for the LP BPF, including reference numbers, use, and description.
Lists capacitor types, values, and tolerances.
Lists resistor types, values, and ratings.
Lists parts specific to the TS-50S, including part numbers and descriptions.
Lists parts for the Final Unit with part numbers and descriptions.
Lists parts for the Digital Unit with part numbers and descriptions.
Lists parts for the IF Unit with part numbers and descriptions.
Lists parts for the PLL Unit with part numbers and descriptions.
Lists parts for the TX-RX Unit with part numbers and descriptions.
Lists parts for the Filter Unit with part numbers and descriptions.
Lists parts for the TX-RX Unit with part numbers and descriptions.
Lists parts for the Filter Unit with part numbers and descriptions.
Lists parts for the TX-RX Unit with part numbers and descriptions.
Lists parts for the VCO with part numbers and descriptions.
Lists parts for the DDS with part numbers and descriptions.
Lists parts for the ALC with part numbers and descriptions.
Lists parts for the DSST with part numbers and descriptions.
Lists parts for the LP BPF with part numbers and descriptions.
Shows the component side exploded view of the Final Unit.
Shows the foil side exploded view of the Final Unit.
Shows the packing components and their arrangement.
Shows additional packing components and their arrangement.
Lists test equipment required for adjustments.
Specifies DC voltmeter requirements for adjustments.
Specifies AC ammeter requirements for adjustments.
Specifies RF VTVM requirements for adjustments.
Specifies AF voltmeter requirements for adjustments.
Specifies oscilloscope requirements for adjustments.
Specifies tracking generator requirements for adjustments.
Specifies signal generator requirements for adjustments.
Specifies dummy load requirements for adjustments.
Specifies spectrum analyzer requirements for adjustments.
Specifies detector requirements for adjustments.
Specifies directional coupler requirements for adjustments.
Specifies power supply requirements for adjustments.
Specifies microphone use for adjustments.
Mentions an adjustment jig used for procedures.
Shows illustrations of adjustment jigs and cables used in the process.
Shows exploded views of the front panel assembly and connections.
Shows exploded views of the rear panel assembly and connections.
Explains how to enter and use the service adjustment mode.
Details panel operations, specifically within the service adjustment mode.
Explains the checksum display function and its hexadecimal representation.
Details the adjustment procedure for the RIT VR mechanical center.
Provides notes and observations regarding the RIT VR adjustment.
Details the adjustment procedure for the IF-SHIFT VR mechanical center.
Details the adjustment for LSB carrier point to correct IF filter variations.
Details the adjustment for USB carrier point to correct IF filter variations.
Details the S-meter curve adjustment for S1 in non-FM modes.
Details the S-meter curve adjustment for S9 in non-FM modes.
Details the S-meter curve adjustment for full scale in non-FM modes.
Details the S-meter curve adjustment for S1 in FM modes.
Details the S-meter curve adjustment for full scale in FM modes.
Details the RF meter curve adjustment for low range.
Details the RF meter curve adjustment for the middle range.
Details the RF meter curve adjustment for the high range.
Details the procedure for writing data into the EEPROM.
Describes the function to turn on all LCD segments for testing.
Shows a front panel diagram with component labels.
Shows a rear panel diagram with connection labels.
Details adjustments for the PLL and CDR circuits, including test equipment and specifications.
Details adjustments for the receiver section.
Adjustment for FM S-meter (S1).
Adjustment for beep tone.
Adjustment for noise blanker.
Adjustment for RF S/N with AIP OFF.
Adjustment for SSB squelch.
Adjustment for FM squelch.
Adjustment for S-meter sensitivity.
Details adjustments for the transmitter section.
Adjustment for RF meter (full scale).
Adjustment for the CAR point.
Adjustment for suppression.
Adjustment for microphone sensitivity.
Adjustment for spurious emissions.
Adjustment for SWR protection.
Adjustment for FM maximum deviation.
Adjustment for FM microphone sensitivity.
Adjustment for subtone.
Adjustment for side tone.
Adjustment for transmitter power.
Shows adjustment points for the TX-RX Unit.
Shows adjustment points for the PLL Unit.
Shows adjustment points for the Filter Unit.
Lists terminal functions for the LCD Assy.
Lists terminal functions for the Final Unit.
Lists terminal functions for the Digital Unit.
Lists terminal functions for the PLL Unit.
Lists terminal functions for the Filter Unit.
Lists terminal functions for the TX-RX Unit.
Shows the component side view of the Final Unit PC board.
Shows the foil side view of the Final Unit PC board.
Shows the circuit diagram for the Final Unit.
Shows the component side view of the Digital Unit PC board.
Shows the foil side view of the Digital Unit PC board.
Shows the circuit diagram for the Digital Unit.
Shows the component side view of the PLL Unit PC board.
Shows the foil side view of the PLL Unit PC board.
Shows the component side view of the VCO PC board.
Shows the foil side view of the VCO PC board.
Shows the component side view of the DDS PC board.
Shows the foil side view of the DDS PC board.
Shows the circuit diagram for the PLL Unit.
Shows the circuit diagram for the Filter Unit.
Shows the component side view of the Filter Unit PC board.
Shows the foil side view of the Filter Unit PC board.
Shows the component side view of the TX-RX Unit PC board.
Shows the foil side view of the TX-RX Unit PC board.
Shows the component side view of the IF Unit PC board.
Shows the foil side view of the IF Unit PC board.
Shows the component side view of the ALC PC board.
Shows the foil side view of the ALC PC board.
Shows the component side view of the DSST PC board.
Shows the foil side view of the DSST PC board.
Shows the component side view of the LP BPF PC board.
Shows the foil side view of the LP BPF PC board.
Shows the circuit diagram for the TX-RX Unit.
Shows the circuit diagram for the Filter Unit.
Shows the block diagram for the Filter Unit.
Shows the block diagram for the TX-RX Unit.
Provides specifications for the MB-13 mounting bracket.
Lists parts for the MB-13 mounting bracket.
Shows dimensions for the PG-2Y DC cable.
Lists parts for the PG-2Y DC cable.
Provides specifications for the MC-47 microphone.
Lists parts for the MC-47 microphone.
Shows the schematic diagram for the MC-47 microphone.
Lists general specifications for the transceiver.
Details the frequency ranges for transmission.
Lists power output levels for different modes.
Specifies the modulation types used.
Lists specifications for spurious emissions.
Specification for carrier suppression.
Specification for unwanted sideband suppression.
Specification for maximum FM deviation.
Specification for transmit frequency characteristics.
Specification for microphone impedance.
Lists specifications related to the receiver.
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