T4A – Station setup: connecting a microphone, a power source, a computer, digital equipment, an SWR meter; bonding; Mobile radio installation 

- [[T4A01]] (D)
Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver? #card
	- A. 24.0 volts at 4 amperes
	- B. 13.8 volts at 4 amperes
	- C. 24.0 volts at 12 amperes
	- D. 13.8 volts at 12 amperes
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- [[T4A02]] (A)
Which of the following should be considered when selecting an accessory SWR meter? #card
	- A. The frequency and power level at which the measurements will be made
	- B. The distance that the meter will be located from the antenna
	- C. The types of modulation being used at the station
	- D. All these choices are correct
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- [[T4A03]] (A)
Why are short, heavy-gauge wires used for a transceiver’s DC power connection? #card
	- A. To minimize voltage drop when transmitting
	- B. To provide a good counterpoise for the antenna
	- C. To avoid RF interference
	- D. All these choices are correct
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- [[T4A04]] (B)
How are the transceiver audio input and output connected in a station configured to operate using FT8? #card
	- A. To a computer running a terminal program and connected to a terminal node controller unit
	- B. To the audio input and output of a computer running WSJT-X software
	- C. To an FT8 conversion unit, a keyboard, and a computer monitor 
	- D. To a computer connected to the FT8converter.com website
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- [[T4A05]] (A)
Where should an RF power meter be installed? #card
	- A. In the feed line, between the transmitter and antenna
	- B. At the power supply output
	- C. In parallel with the push-to-talk line and the antenna
	- D. In the power supply cable, as close as possible to the radio
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- [[T4A06]] (C)
What signals are used in a computer-radio interface for digital mode operation? #card
	- A. Receive and transmit mode, status, and location
	- B. Antenna and RF power
	- C. Receive audio, transmit audio, and transmitter keying
	- D. NMEA GPS location and DC power
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- [[T4A07]] (C)
Which of the following connections is made between a computer and a transceiver to use computer software when operating digital modes? #card
	- A. Computer “line out” to transceiver push-to-talk
	- B. Computer “line in” to transceiver push-to-talk
	- C. Computer “line in” to transceiver speaker connector
	- D. Computer “line out” to transceiver speaker connector
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- [[T4A08]] (D)
Which of the following conductors is preferred for bonding at RF? #card
	- A. Copper braid removed from coaxial cable
	- B. Steel wire
	- C. Twisted-pair cable
	- D. Flat copper strap
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- [[T4A09]] (B)
How can you determine the length of time that equipment can be powered from a battery? #card
	- A. Divide the watt-hour rating of the battery by the peak power consumption of the equipment
	- B. Divide the battery ampere-hour rating by the average current draw of the equipment
	- C. Multiply the watts per hour consumed by the equipment by the battery power rating
	- D. Multiply the square of the current rating of the battery by the input resistance of the equipment
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- [[T4A10]] (A)
What function is performed with a transceiver and a digital mode hot spot? #card
	- A. Communication using digital voice or data systems via the internet
	- B. FT8 digital communications via AFSK
	- C. RTTY encoding and decoding without a computer
	- D. High-speed digital communications for meteor scatter
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- [[T4A11]] (A)
Where should the negative power return of a mobile transceiver be connected in a vehicle? #card
	- A. At the 12 volt battery chassis ground
	- B. At the antenna mount
	- C. To any metal part of the vehicle
	- D. Through the transceiver’s mounting bracket
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- [[T4A12]] (C)
What is an electronic keyer? #card
	- A. A device for switching antennas from transmit to receive
	- B. A device for voice activated switching from receive to transmit
	- C. A device that assists in manual sending of Morse code
	- D. An interlock to prevent unauthorized use of a radio