T7A – Station equipment: receivers, transceivers, transmitter amplifiers, receive amplifiers, transverters; Basic radio circuit concepts and terminology: sensitivity, selectivity, mixers, oscillators, PTT, modulation 

- [[T7A01]] (B)
Which term describes the ability of a receiver to detect the presence of a signal? #card
	- A. Linearity
	- B. Sensitivity
	- C. Selectivity
	- D. Total Harmonic Distortion

- [[T7A02]] (A)
What is a transceiver? #card
	- 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]] (B)
Which of the following is used to convert a signal from one frequency to another? #card
	- A. Phase splitter
	- B. Mixer
	- C. Inverter
	- D. Amplifier

- [[T7A04]] (C)
Which term describes the ability of a receiver to discriminate between multiple signals? #card
	- A. Discrimination ratio
	- B. Sensitivity
	- C. Selectivity
	- D. Harmonic distortion

- [[T7A05]] (D)
What is the name of a circuit that generates a signal at a specific frequency? #card
	- A. Reactance modulator
	- B. Phase modulator
	- C. Low-pass filter
	- D. Oscillator

- [[T7A06]] (C)
What device converts the RF input and output of a transceiver to another band? #card
	- A. High-pass filter
	- B. Low-pass filter
	- C. Transverter
	- D. Phase converter

- [[T7A07]] (B)
What is the function of a transceiver’s PTT input? #card
	- 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]] (C)
Which of the following describes combining speech with an RF carrier signal? #card
	- A. Impedance matching
	- B. Oscillation
	- C. Modulation
	- D. Low-pass filtering

- [[T7A09]] (B)
What is the function of the SSB/CW-FM switch on a VHF power amplifier? #card
	- 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]] (B)
What device increases the transmitted output power from a transceiver? #card
	- A. A voltage divider
	- B. An RF power amplifier
	- C. An impedance network
	- D. All these choices are correct

- [[T7A11]] (A)
Where is an RF preamplifier installed? #card
	- A. Between the antenna and receiver
	- B. At the output of the transmitter power amplifier
	- C. Between the transmitter and the antenna tuner
	- D. At the output of the receiver audio amplifier