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General| Brand | Yaesu |
|---|---|
| Model | FT-780R |
| Category | Transceiver |
| Language | English |
Overview of the FT-780R's features and capabilities.
Technical details like frequency coverage, modes, and power requirements.
Details about power output, suppression, sensitivity, and selectivity.
List of included and optional accessories for the transceiver.
Explanation of controls like VOL, STEP, MEMORY, MODE, MIC, S/PO.
Detailed description of front panel switches and LEDs.
Description of ANT, TONE IN, ACC, BACKUP, POWER, EXT SP, KEY connectors.
Explanation of SAT, SCAN, and BURST switches located on the unit's underside.
Guidance on selecting and installing antennas for optimal performance.
Instructions for installing the transceiver in a mobile environment.
Guidelines for setting up the transceiver for base station use.
Steps for initial checks and selecting frequencies using the main dial.
How to operate the receiver in SSB, CW, and FM modes.
Procedures for transmitting in SSB, CW, and FM modes.
Storing, recalling, and scanning memory channels.
Advanced operation modes like priority, repeater splits, and satellite.
Schematic showing the interconnected modules of the main unit.
Schematic illustrating the PLL and display control units.
Detailed explanation of the receiver's RF, IF, and audio signal paths.
How the S-meter and squelch functions operate.
Description of NB, SSB, CW, and FM signal processing.
Explanation of power, control, ALC, AFP, and PLL circuit functions.
Details on PLL oscillator setup and control logic.
List of specialized equipment needed for maintenance and alignment.
Diagrams showing the physical location of internal units.
Procedures to verify transmitter power output levels.
Methods to test and calibrate receiver sensitivity.
Alignment steps for receiver sections and IF amplifiers.
Adjustments for local oscillators, SSB carrier, and overall sensitivity.
Procedures for adjusting NB, squelch, and transmitter filters.
Alignment for CW oscillator, ALC, power output meter, and AFP circuits.
Settings for low power output, FM, and SSB modulator adjustments.
Alignment steps for VCO voltage control and multiplier stages.
Tuning the PLL bandpass filter and reference/local oscillators.
Comprehensive list of components for the main chassis.
Component lists for the Power Amplifier and PLL units.
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