What is the purpose of a capacitance hat on a mobile antenna?

1. A To increase the power handling capacity of a whip antenna
2. B To reduce radiation resistance
3. C To electrically lengthen a physically short antenna
4. D To lower the radiation angle

What is the purpose of a corona ball on an HF mobile antenna?

1. A To narrow the operating bandwidth of the antenna
2. B To increase the "Q" of the antenna
3. C To reduce the chance of damage if the antenna should strike an object
4. D To reduce RF voltage discharge from the tip of the antenna while transmitting

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

1. A To the battery using heavy-gauge wire
2. B To the alternator or generator using heavy-gauge wire
3. C To the battery using insulated heavy duty balanced transmission line
4. D To the alternator or generator using insulated heavy duty balanced transmission line

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle's auxiliary power socket?

1. A The socket is not wired with an RF-shielded power cable
2. B The socket's wiring may be inadequate for the current drawn by the transceiver
3. C The DC polarity of the socket is reversed from the polarity of modern HF transceivers
4. D Drawing more than 50 watts from this socket could cause the engine to overheat

Which of the following most limits an HF mobile installation?

1. A "Picket fencing"
2. B The wire gauge of the DC power line to the transceiver
3. C Efficiency of the electrically short antenna
4. D FCC rules limiting mobile output power on the 75-meter band

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

1. A Short antennas are more likely to cause distortion of transmitted signals
2. B Q of the antenna will be very low
3. C Operating bandwidth may be very limited
4. D Harmonic radiation may increase

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

1. A The battery charging system
2. B The fuel delivery system
3. C The control computers
4. D All these choices are correct

In what configuration are the individual cells in a solar panel connected together?

1. A Series-parallel
2. B Shunt
3. C Bypass
4. D Full-wave bridge

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

1. A 0.02 VDC
2. B 0.5 VDC
3. C 0.2 VDC
4. D 1.38 VDC

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

1. A To prevent overload by regulating the charging voltage
2. B To prevent discharge of the battery through the panel during times of low or no illumination
3. C To limit the current flowing from the panel to a safe value
4. D To prevent damage to the battery due to excessive voltage at high illumination levels

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

1. A Ground the solar panel outer metal framework
2. B Ensure the battery is placed terminals-up
3. C A series resistor must be in place
4. D The solar panel must have a charge controller