Yaesu FT-250 User Manual

Describes the signal path and components involved in receiving.

Details the signal path and components for transmitting.

Step-by-step guide for tuning the transmitter for optimal output.

Lists the necessary test instruments and tools for alignment.

Instructions for measuring voltage and resistance during alignment.

Steps to adjust and check the voltage regulator output.

Procedure for aligning the Variable Frequency Oscillator.

Adjusting the audio output stage for proper performance.

Setting the Automatic Gain Control for optimal signal reception.

Steps to align the balanced modulator for correct signal generation.

Procedure for aligning the crystal filter for desired passband.

Tuning the driver stage for optimal power output.

Neutralizing the final amplifier tubes for stable operation and maximum output.