amount. Example 10.4 A direct-FM transmitter has a varactor modulator with k+ = 2 kHz/V and a maximum deviation of 300 Hz. This modulator is followed by a buffer and three stages of frequency multiplication: a tripler, a doubler, and another tripler, followed by a driver and power amplifier. 1) Draw a block diagram of this transmitter. 2) Will this transmitter be capable of 5 kHz deviation at the output? 3) What should the oscillator frequency be if the transmitter is to operate at a carrier frequency of 150 MHz? 4) What audio voltage will be required at the modulator input to obtain full deviation?