Morse code is usually transmitted on the air as:
  1. interrupted carrier 2. voice modulated carrier 3. continuous carrier 4. a series of clicks

Key clicks heard from a morse code transmitter at a distant receiver, are the result of:
1. sparks emitting RF from the key contacts 2. changes in oscillator frequency on keying 3. power supply hum modulating the carrier 4. too sharp rise and decay times of the carrier

SSB transmissions:
1. occupy twice the bandwidth of AM transmissions 2. contains more information than AM transmissions 3. occupy 1/2 the bandwidth of AM transmissions 4. are compatible with FM transmissions

The purpose of a balanced modulator in a SSB transmitter is:
1. make sure that the carrier and both sidebands are in phase 2. make sure that the carrier and both sidebands are 180 degrees out of phase 3. ensure that the percentage of modulation is kept constant 4. suppress the carrier and pass on the two sidebands

A parasitic oscillation:
1. is an unwanted self oscillating signal developed in a transmitter 2. is generated by parasitic elements of a yagi beam 3. does not cause any radio interference 4. is produced in a transmitter oscillator stage

Parasitic oscillations are usually generated due to:
1. a mismatch between PA and feeder 2. accidental resonant frequencies in the PA circuitry 3. excessive drive or excitation to the PA stage 4. harmonics from some earlier multiplier stage

Harmonics may be produced in the RF power amplifier of a transmitter if:
1. the output tank circuit is not properly tuned 2. excessive modulation is applied to it 3. the oscillator frequency is unstable 4. modulation is applied to more than one stage

The input power to the final stage of your transmitter is 200 watts and the output is 125 watts. What has happened to the remaining power.:
1. it has been dissipated as heat loss 2. it has been used to provide greater efficiency in the final stage 3. it has been used to provide negative feedback 4. it has been used to provide positive feedback

Transmitter RF amplifiers can generate parasitic oscillations:
1. on the transmitter fundamental frequency 2. on harmonics of the transmitter frequency 3. on either side of the transmitter frequency 4. on VHF frequencies only

The driver stage of a transmitter is located:
1. before the power amplifier 2. between oscillator and buffer 3. with the frequency multiplier 4. after the output tank circuit