To Next PageTo Next Page
Need help?Do you have a question about the Yaesu FR-101 and is the answer not in the manual?
Provides instructions for unpacking and initial handling of the receiver.
Recommends placing the FR-101 in a location with adequate space and ventilation.
Details AC and DC power requirements and voltage selection.
Warns about permanent damage from improper AC supply voltage.
Explains antenna impedance requirements and grounding.
Details connecting a 4 ohm speaker and accessory models.
Explains headphone jack usage and resistor adjustment.
Describes the MUTE jack's function for external muting.
Controls the main frequency tuning for receiving signals.
A twenty-one position switch to select operating bands.
Push buttons for POWER, STBY, NB, DIGIT, and CALIB functions.
Selects the detector and filter for AM, CW, RTTY, SSB, and FM modes.
Controls the audio output level of the receiver.
Selects external VFO or internal crystal-controlled positions.
Selects the AGC time constant (SLOW, FAST, OFF).
Adjusts receiver frequency for transceive operation and clarifier tuning.
Tunes antenna and RF coils for optimal front-end reception.
Monitors transmitted signal and adjusts FM squelch sensitivity.
Selects optional 6 meter and 2 meter VHF convertors.
Attenuates incoming signals to prevent front-end overload.
Jacks for private listening and recording with headphones.
Indicates relative signal strength of received signals.
Automatically indicates the band selected by the BAND switch.
Locks the main tuning dial for calibration purposes.
Coaxial connectors for HF, 6 meter, and 2 meter bands.
An auxiliary jack for optional use, not wired internally.
For externally muting the receiver; requires center conductor shorted to ground.
Input for an external sidetone signal in CW operation.
For connecting a 4 ohm speaker.
Output for energizing the VOX circuit of a transmitter.
For coupling the VFO signal for transceive operation.
Holds a 1 amp fuse for protection of the FR-101.
Accepts AC or DC voltages for operation.
For a ground connection to ensure proper operation.
Procedures for checking the FR-101 before applying power.
Explains the main tuning dial and sub-dial for frequency setting.
Recommended initial settings for all controls before operation.
Instructions for using the noise blanker to reduce impulse noise.
Settings for VHF reception using optional convertors.
Describes the preselector tuning range and adjustment for auxiliary bands.
Instructions for programming bands not covered in Table 4.
Interconnection and operation with the FL-101 transmitter.
Explains the SELECT switch function in transceive operation.
Monitors transmitted signal during transceive operation.
Adjusts receiver frequency for transceive operation and clarifier tuning.
Interconnection and operation with the FT-101E/277E transceiver.
Describes the path of the incoming signal through the receiver circuits.
Explains crystal filters, detectors, and mode switching.
Describes the ring demodulator and carrier oscillator circuits.
Explains AM detection and FM limiter/detector circuits.
Explains the Automatic Gain Control and S-meter circuitry.
Details the operation of the noise blanker circuitry.
Describes the FET oscillator for fixed channel reception.
Explains the power supply and voltage regulation circuitry.
Details the 100 KHz crystal calibrator and 25 KHz marker generator.
Explains the varactor diode circuit for frequency shifting.
Describes the 6 meter and 2 meter converter circuits.
General advice on performing alignment and required test equipment.
Procedure for adjusting the T110 oscillator transformer.
Procedure for aligning trimmer capacitors TC17 through TC26.
Alignment of preselector and associated trimmer capacitors.
Alignment procedure for the Bandpass IF Unit.
Alignment steps for the Noise Blanker and Mixer Unit.
Alignment steps for the IF Unit.
Alignment steps for the AF Unit.
Alignment steps for the Regulator and Beat Frequency Oscillator Unit.
Alignment steps for the VFO Unit.
Alignment steps for the VFO Buffer Unit.
Alignment steps for the Fix Unit.
Alignment steps for IF Trap Coils.
Alignment steps for the FM Unit.
Alignment steps for the 6 Meter Converter Unit.
Alignment steps for the 2 Meter Converter Unit.
Alignment steps for controls on the main chassis.
General
