What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?
Answer416.7 Hz
If a 12.21 MHz oscillator is multiplied by 12 to reach 146.52 MHz, its deviation is also multiplied by 12. A final 5 kHz deviation therefore requires about 416.7 Hz at the oscillator.