Practice Exam

T1E02

1. Who may be the control operator of a station communicating through an amateur satellite or space station?

• A. Only an Amateur Extra Class operator
• B. Only an Amateur Extra Class operator who is also an AMSAT member
• C. Any amateur allowed to transmit on the satellite uplink frequency
• D. A General class or higher licensee with a satellite operator certification

T2C08

2. Which of the following is a characteristic of good traffic handling?

• A. Ensuring that any newsworthy messages are relayed to the news media
• B. Passing messages exactly as received
• C. All these choices are correct
• D. Making decisions as to whether messages are worthy of relay or delivery

T5C09

3. How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

• A. 138 watts
• B. 23.8 watts
• C. 3.8 watts
• D. 0.7 watts

T0A01

4. Which of the following is a safety hazard of a 12-volt storage battery?

• A. Shorting the terminals can cause burns, fire, or an explosion
• B. RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas
• C. Touching both terminals with the hands can cause electrical shock
• D. All these choices are correct

T9A12

5. What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?

• A. It has more gain than a 1/4-wavelength antenna
• B. It has 10 times the power gain of a 1/4 wavelength whip
• C. It radiates at a very high angle
• D. It eliminates distortion caused by reflected signals

T1B02

6. Which amateurs may contact the International Space Station (ISS) on VHF bands?

• A. Any amateur holding a General class or higher license
• B. Any amateur holding a Technician class or higher license
• C. Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
• D. Any amateur holding a General class or higher license who has applied for and received approval from NASA

T3A12

7. What is the effect of fog and rain on signals in the 10 meter and 6 meter bands?

• A. Deflection
• B. There is little effect
• C. Range increase
• D. Absorption

T4B10

8. Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception?

• A. 2400 Hz
• B. 5000 Hz
• C. 500 Hz
• D. 1000 Hz

T2A04

9. What is an appropriate way to call another station on a repeater if you know the other station's call sign?

• A. Say "break, break," then say the station's call sign
• B. Say the station's call sign, then identify with your call sign
• C. Say "CQ" three times, then the other station's call sign
• D. Wait for the station to call CQ, then answer

T7D03

10. When configured to measure current, how is a multimeter connected to a component?

• A. In quadrature
• B. In parallel
• C. In series
• D. In phase

T5A02

11. Electrical power is measured in which of the following units?

• A. Volts
• B. Watts
• C. Watt-hours
• D. Amperes

T6B05

12. What type of transistor has a gate, drain, and source?

• A. Varistor
• B. Field-effect
• C. Bipolar junction
• D. Tesla-effect

T6C09

13. What is component 4 in figure T-2?

• A. Transformer
• B. Potentiometer
• C. Variable inductor
• D. Double-pole switch

T1A07

14. What is the FCC Part 97 definition of a space station?

• A. A manned satellite orbiting Earth
• B. Any satellite orbiting Earth
• C. An amateur station using amateur radio satellites for relay of signals
• D. An amateur station located more than 50 km above Earth's surface

T1F04

15. What language may you use for identification when operating in a phone sub-band?

• A. Any language recognized by the ITU
• B. English
• C. Any language recognized by the United Nations
• D. English, French, or Spanish

T4A08

16. Which of the following conductors is preferred for bonding at RF?

• A. Copper braid removed from coaxial cable
• B. Steel wire
• C. Flat copper strap
• D. Twisted-pair cable

T1C05

17. Which of the following is a valid Technician class call sign format?

• A. KA1X
• B. W1XX
• C. All these choices are correct
• D. KF1XXX

T3C08

18. What causes tropospheric ducting?

• A. Temperature inversions in the atmosphere
• B. Discharges of lightning during electrical storms
• C. Updrafts from hurricanes and tornadoes
• D. Sunspots and solar flares

T8B02

19. What is the impact of using excessive effective radiated power on a satellite uplink?

• A. Possibility of commanding the satellite to an improper mode
• B. Possibility of rebooting the satellite control computer
• C. Blocking access by other users
• D. Overloading the satellite batteries

T8A10

20. What is the approximate bandwidth of AM fast-scan TV transmissions?

• A. About 6 MHz
• B. About 1 MHz
• C. More than 10 MHz
• D. About 3 MHz

T0B04

21. Which of the following is an important safety precaution to observe when putting up an antenna tower?

• A. Look for and stay clear of any overhead electrical wires
• B. All these choices are correct
• C. Insulate the base of the tower to avoid lightning strikes
• D. Wear a ground strap connected to your wrist at all times

T5B13

22. Which is equal to 2425 MHz?

• A. 24.25 GHz
• B. 2.425 GHz
• C. 0.002425 GHz
• D. 2425 GHz

T1D04

23. Under what conditions is an amateur station authorized to transmit music using a phone emission?

• A. When the music produces no spurious emissions
• B. When incidental to an authorized retransmission of manned spacecraft communications
• C. When the music is transmitted above 1280 MHz
• D. When transmissions are limited to less than three minutes per hour

T9B09

24. What can cause erratic changes in SWR?

• A. Local thunderstorm
• B. Loose connection in the antenna or feed line
• C. Overload from a strong local station
• D. Over-modulation

T7A09

25. What is the function of the SSB/CW-FM switch on a VHF power amplifier?

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

T8C05

26. What is a grid locator?

• A. A letter-number designator assigned to an azimuth and elevation
• B. An instrument for neutralizing a final amplifier
• C. An instrument for radio direction finding
• D. A letter-number designator assigned to a geographic location

T3B09

27. What frequency range is referred to as UHF?

• A. 300 to 3000 MHz
• B. 30 to 300 MHz
• C. 300 to 3000 kHz
• D. 30 to 300 kHz

T5D04

28. What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

• A. 30 ohms
• B. 3 ohms
• C. 93 ohms
• D. 270 ohms

T6A03

29. What electrical parameter is controlled by a potentiometer?

• A. Field strength
• B. Capacitance
• C. Resistance
• D. Inductance

T0C05

30. Why do exposure limits vary with frequency?

• A. Lower frequency RF fields do not penetrate the human body
• B. The human body absorbs more RF energy at some frequencies than at others
• C. Lower frequency RF fields have more energy than higher frequency fields
• D. Higher frequency RF fields are transient in nature

T7B06

31. Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception?

• A. All these choices are correct
• B. Immediately turn off your transmitter and contact the nearest FCC office for assistance
• C. Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
• D. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated

T8D10

32. Which of the following operating activities is supported by digital mode software in the WSJT-X software suite?

• A. Earth-Moon-Earth
• B. Meteor scatter
• C. All these choices are correct
• D. Weak signal propagation beacons

T7C07

33. What happens to power lost in a feed line?

• A. It is converted into heat
• B. It distorts the signal
• C. It increases the SWR
• D. It is radiated as harmonics

T2B09

34. Why are simplex channels designated in the VHF/UHF band plans?

• A. So stations with simple transmitters can access the repeater without automated offset
• B. So stations within range of each other can communicate without tying up a repeater
• C. For contest operation
• D. For working DX only

T6D03

35. Which of the following is a reason to use shielded wire?

• A. To couple the wire to other signals
• B. To prevent coupling of unwanted signals to or from the wire
• C. To decrease the resistance of DC power connections
• D. To increase the current carrying capability of the wire