Group T7A

11 questions from the official pool, drawn by ID — exact wording, never retyped.

T7A01 Which term describes the ability of a receiver to detect the presence of a signal?

A RF gain B Sensitivity C Selectivity D Total Harmonic Distortion

T7A02 What is a transceiver?

A A device that combines a receiver and transmitter B A device for matching feed line impedance to 50 ohms C A device for automatically sending and decoding Morse code D A device for converting receiver and transmitter frequencies to another band

T7A03 Which of the following is used to convert a signal from one frequency to another?

A Phase splitter B Mixer C Inverter D Amplifier

T7A04 Which term describes the ability of a receiver to discriminate between multiple signals?

A Discrimination ratio B Sensitivity C Selectivity D Harmonic distortion

T7A05 What is the name of a circuit that generates a signal at a specific frequency?

A Reactance modulator B Phase modulator C Low-pass filter D Oscillator

T7A06 What device converts the RF input and output of a transceiver to another band?

A High-pass filter B Low-pass filter C Transverter D Phase converter

T7A07 What is the function of a transceiver's PTT input?

A Input for a key used to send CW B Switches transceiver from receive to transmit when grounded C Provides a transmit tuning tone when grounded D Input for a preamplifier tuning tone

T7A08 Which of the following describes combining speech with an RF carrier signal?

A Impedance matching B Oscillation C Modulation D Low-pass filtering

T7A09 What is the function of the switch which selects either SSB or CW-FM on some VHF power amplifiers?

A Change the mode of the transmitted signal B Set the amplifier for proper operation in the selected mode C Change the frequency range of the amplifier to operate in the proper segment of the band D Reduce the received signal noise

T7A10 What can be added to the output of a transceiver to increase the transmitted output power?

A A potentiometer B An RF power amplifier C An impedance multiplier D All these choices are correct

T7A11 What is the function of the Variable Frequency Oscillator (VFO) circuit in a transceiver?

A Set the receive and transmit frequency B Provide automatic frequency control C Inject a variable frequency to allow CW reception D Generate and demodulate single sideband signals