Practice Exam

T1E03

1. Who must designate the station control operator?

• A. The frequency coordinator
• B. The FCC
• C. The station licensee
• D. Any licensed operator

T3B07

2. In addition to frequency, which of the following is used to identify amateur radio bands?

• A. Channel numbers
• B. The approximate wavelength in meters
• C. All these choices are correct
• D. Traditional letter/number designators

T6C02

3. What is component 1 in figure T-1?

• A. Transistor
• B. Battery
• C. Resistor
• D. Connector

T3A05

4. When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?

• A. Change from vertical to horizontal polarization
• B. Try the long path
• C. Try to find a path that reflects signals to the repeater
• D. Increase the antenna SWR

T5A12

5. What describes the number of times per second that an alternating current makes a complete cycle?

• A. Speed
• B. Frequency
• C. Pulse rate
• D. Wavelength

T8D11

6. What is an ARQ transmission system?

• A. An error correction method in which the receiving station detects errors and sends a request for retransmission
• B. A special transmission format limited to video signals
• C. A system used to encrypt command signals to an amateur radio satellite
• D. A method of compressing data using autonomous reiterative Q codes prior to final encoding

T6D05

7. What type of circuit controls the amount of voltage from a power supply?

• A. Regulator
• B. Filter
• C. Phase inverter
• D. Oscillator

T6B03

8. Which of these components can be used as an electronic switch?

• A. Varistor
• B. Potentiometer
• C. Transistor
• D. Thermistor

T2A12

9. What should you do before calling CQ?

• A. Listen first to be sure that no one else is using the frequency
• B. Make sure you are authorized to use that frequency
• C. All these choices are correct
• D. Ask if the frequency is in use

T5B11

10. Which decibel value represents a power increase from 20 watts to 200 watts?

• A. 18 dB
• B. 28 dB
• C. 12 dB
• D. 10 dB

T7D09

11. What is the characteristic appearance of a cold tin-lead solder joint?

• A. Excessive solder
• B. A rough or lumpy surface
• C. A bright or shiny surface
• D. Dark black spots

T9B11

12. Which of the following types of feed line has the lowest loss at VHF and UHF?

• A. 50-ohm flexible coax
• B. Air-insulated hardline
• C. 75-ohm flexible coax
• D. Multi-conductor unbalanced cable

T5C04

13. What is the unit of inductance?

• A. The ohm
• B. The coulomb
• C. The henry
• D. The farad

T0B03

14. Under what circumstances is it safe to climb a tower without a helper or observer?

• A. When no electrical work is being performed
• B. Never
• C. When the work being done is not more than 20 feet above the ground
• D. When no mechanical work is being performed

T4A11

15. Where should the negative power return of a mobile transceiver be connected in a vehicle?

• A. At the 12 volt battery chassis ground
• B. Through the transceiver's mounting bracket
• C. At the antenna mount
• D. To any metal part of the vehicle

T8B05

16. What is a satellite beacon?

• A. The primary transmit antenna on the satellite
• B. A reflective surface on the satellite
• C. A transmission from a satellite that contains status information
• D. An indicator light that shows where to point your antenna

T1C09

17. What is the grace period for renewal if an amateur license expires?

• A. Five years
• B. Three years
• C. Two years
• D. Ten years

T1D02

18. Under which of the following circumstances are one-way transmissions by an amateur station prohibited?

• A. International Morse Code Practice
• B. In all circumstances
• C. Telecommand or transmissions of telemetry
• D. Broadcasting

T4B05

19. What does the scanning function of an FM transceiver do?

• A. Prevents interference to nearby repeaters
• B. Checks incoming signal deviation
• C. Tunes through a range of frequencies to check for activity
• D. Checks for messages left on a digital bulletin board

T7C04

20. What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

• A. Zero
• B. 50:50
• C. Full Scale
• D. 1:1

T3C01

21. Why are simplex UHF signals rarely heard beyond their radio horizon?

• A. FCC regulations prohibit them from going more than 50 miles
• B. UHF signals are usually not propagated by the ionosphere
• C. They are too weak to go very far
• D. UHF signals are absorbed by the ionospheric D region

T9A04

22. What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

• A. It transmits only circularly polarized signals
• B. It is mechanically fragile
• C. All these choices are correct
• D. It has low efficiency

T7B04

23. Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

• A. Low-pass filter
• B. Preamplifier
• C. Ferrite choke
• D. Band-pass filter

T0A05

24. Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?

• A. The power supply ripple would greatly increase
• B. Excessive current could cause a fire
• C. All these choices are correct
• D. The larger fuse would be likely to blow because it is rated for higher current

T7A11

25. Where is an RF preamplifier installed?

• A. At the output of the receiver audio amplifier
• B. At the output of the transmitter power amplifier
• C. Between the transmitter and the antenna tuner
• D. Between the antenna and receiver

T8A06

26. Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

• A. Suppressed sideband
• B. Lower sideband
• C. Inverted sideband
• D. Upper sideband

T0C03

27. How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

• A. It decreases by 50 percent
• B. It increases by a factor of 2
• C. It increases by a factor of 3
• D. There is no adjustment allowed for lower duty cycle

T2B12

28. What is the purpose of the color code used on DMR repeater systems?

• A. Defines the minimum signal level required for access
• B. Must match the repeater color code for access
• C. Identifies the codec used
• D. Defines the frequency pair to use

T1F02

29. How often must you identify with your FCC-assigned call sign when using tactical call signs such as "Race Headquarters"?

• A. Once during every hour
• B. Never, the tactical call is sufficient
• C. At the end of each communication and every ten minutes during a communication
• D. At the end of every transmission

T8C02

30. Which of these items would be useful for a hidden transmitter hunt?

• A. Calibrated SWR meter
• B. A directional antenna
• C. A calibrated noise bridge
• D. All these choices are correct

T5D06

31. What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

• A. 48 ohms
• B. 3 ohms
• C. 16 ohms
• D. 8 ohms

T1B10

32. Where may SSB phone be used in amateur bands above 50 MHz?

• A. Only in sub-bands allocated to General class or higher licensees
• B. On any band if the power is limited to 25 watts
• C. In at least some segment of all these bands
• D. Only on repeaters

T1A08

33. Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?

• A. Frequency Spectrum Manager appointed by the FCC
• B. FCC Regional Field Office
• C. Volunteer Frequency Coordinator recognized by local amateurs
• D. International Telecommunication Union

T2C02

34. Which of the following are typical duties of a Net Control Station?

• A. All these choices are correct
• B. Call the net to order and direct communications between stations checking in
• C. Choose the regular net meeting time and frequency
• D. Ensure that all stations checking into the net are properly licensed for operation on the net frequency

T6A07

35. What electrical component is typically constructed as a coil of wire?

• A. Capacitor
• B. Inductor
• C. Diode
• D. Switch