Free Ham Radio Technician License Questions and Answers — Questions and Answers

Question 1: The Radio Amateur Civil Emergency Service (RACES) is what, exactly?

A radio service using amateur stations for emergency management or civil defense communications
A radio service using amateur frequencies for emergency management or civil defense communications
An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
All these choices are correct (Correct answer)

Correct answer: All these choices are correct

Explanation: Which one of them houses data storage? In times of local, regional, or national civil emergencies, RACES (radio amateur civil emergency service) is a radio service that uses amateur stations for civil defence communications.

Question 2: Where may an amateur SSB phone be used above 50 MHz?

Only on repeaters
Only in sub-bands allocated to General class or higher licensees
On any band if the power is limited to 25 watts
In at least some segment of all these bands (Correct answer)

Correct answer: In at least some segment of all these bands

Explanation: All amateur bands above 50 MHz have a portion that is usable for SSB.

Question 3: How soon can you transmit on amateur radio bands after passing the test for your first amateur radio license?

As soon as you receive your license in the mail from FCC
Immediately on receiving your Certificate of Successful Completion of Examination (CSCE)
As soon as your operator/station license grant appears on the ARRL website
As soon as your operator/station license grant appears in the FCC's license database (Correct answer)

Correct answer: As soon as your operator/station license grant appears in the FCC's license database

Explanation: As soon as your identity and call sign show in the ULS database of the FCC, you are eligible to operate a transmitter on an amateur service frequency after passing the test necessary for your first amateur radio license.

Question 4: How is broadcasting for the Amateur Radio Service defined by the FCC?

Transmissions intended for reception by the general public. (Correct answer)
Two-way transmissions by amateur stations
Any transmission made by the licensed station
Transmission of messages directed only to amateur operators

Correct answer: Transmissions intended for reception by the general public.

Explanation: Broadcasting refers to transmissions meant for public reception in the FCC standards for amateur services. Communications intended to be viewed by the general public, either directly or through a relay, are broadcasting.

Question 5: By Part 97, which of the following is an example of remote control?

Repeater operation
Controlling a model aircraft, boat, or car by amateur radio
All these choices are correct
Operating the station over the internet (Correct answer)

Correct answer: Operating the station over the internet

Explanation: A remote control scenario would be to run the station online.

Question 6: If a repeater unintentionally retransmits communications that are forbidden by the FCC, who is responsible?

The control operator of the repeater
The control operator of the originating station (Correct answer)
Both the originating station and the repeater owner
The owner of the repeater

Correct answer: The control operator of the originating station

Explanation: The control operator of the originating station is responsible if a repeater unintentionally retransmits communications that violate FCC regulations.

Question 7: What, beyond the FCC-established privileges, is a band plan?

A list of operating schedules
A voluntary guideline for using different modes or activities within an amateur band (Correct answer)
A plan devised by a club to indicate frequency band usage
A list of available net frequencies

Correct answer: A voluntary guideline for using different modes or activities within an amateur band

Explanation: A band plan is an optional set of rules for using specific modes or activities within an amateur band, in addition to the rights granted by the FCC.

Question 8: How can bias affect the light that an LED emits?

Forward biased (Correct answer)
At the Zener voltage
Reverse biased
Beyond cutoff

Correct answer: Forward biased

When an LED is forward biased, a positive voltage is applied to the anode (the positive terminal) and a negative voltage to the cathode (the negative terminal). This forward bias creates an electric field that allows current to flow through the LED, which in turn results in the emission of light.

Question 9: Which of the following can be altered to improve a Yagi antenna's forward gain, front-to-back ratio, or SWR bandwidth?

The spacing of each element along the boom
The number of elements on the boom
The physical length of the boom
All these choices are correct (Correct answer)

Correct answer: All these choices are correct

All of these choices are correct because a Yagi's forward gain, front-to-back ratio, and SWR bandwidth all depend on its physical geometry — element spacing along the boom, the number of elements, and the boom length can each be adjusted to tune performance. Since every listed parameter affects the antenna, no single option alone is the complete answer.

Question 10: Why does a transmitter keying circuit occasionally have a time delay?

To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
To allow time for a warning signal to be sent to other stations
To allow time for transmit-receive changeover operations to complete properly before RF output is allowed (Correct answer)
To allow time for a warning signal to be sent to other stations

Correct answer: To allow time for transmit-receive changeover operations to complete properly before RF output is allowed

A transmitter keying circuit occasionally has a time delay to allow time for transmit-receive changeover operations to complete properly before RF (Radio Frequency) output is allowed. This time delay is implemented to ensure smooth and reliable operation during the transition between transmission and reception modes.

Question 11: Why is a series diode linked between a solar panel and a storage battery that the panel is using to charge?

The diode serves to regulate the changing voltage to prevent overcharge
The diode prevents self-discharge of the battery through the panel during times of low or no illumination (Correct answer)
The diode greatly increases the efficiency during times of high illumination
The diode limits the current flowing from the panel to a safe value

Correct answer: The diode prevents self-discharge of the battery through the panel during times of low or no illumination

The series diode linked between a solar panel and a storage battery that the panel is using to charge serves an important protective function. The diode prevents self-discharge of the battery through the panel during times of low or no illumination. This phenomenon is commonly referred to as "reverse current flow" or "backflow."

Question 12: Which HF/MF bands are all amateur frequency privileges available to General class license holders?

60 meters, 20 meters, 17 meters, and 12 meters
160 meters, 80 meters, 40 meters, and 10 meters
160 meters, 60 meters, 30 meters, 17 meters, 12 meters, and 10 meters (Correct answer)
160 meters, 30 meters, 17 meters, 15 meters, 12 meters, and 10 meters

Correct answer: 160 meters, 60 meters, 30 meters, 17 meters, 12 meters, and 10 meters

General class licensees have full amateur privileges across the entire amateur allocation on 160, 60, 30, 17, 12, and 10 meters, while bands like 80, 40, 20, and 15 meters are only partially available to them. The other lists either omit qualifying bands or include 15 meters, where General access is restricted to portions of the band rather than the whole segment.

Question 13: What limitations apply to the use of procedural signals or abbreviations in the amateur service?

They are not permitted
They may be used if they do not obscure the meaning of a message (Correct answer)
Only "10 codes" are permitted
Only "Q" signals are permitted

Correct answer: They may be used if they do not obscure the meaning of a message

In the amateur radio service, the use of procedural signals or abbreviations is generally allowed, but there are specific limitations that apply to their usage. The primary limitation is that procedural signals or abbreviations should not obscure the meaning of a message. This means that while using these signals or abbreviations is permitted, they should not hinder the understanding of the communication.

Question 14: What does a "C" appended to the RST report while sending CW mean?

Report was read from an S meter rather than estimated
100 percent copy
Chirpy or unstable signal (Correct answer)
Key clicks

Correct answer: Chirpy or unstable signal

In amateur radio, the RST code is used to report the readability, signal strength, and tone of a received signal during Morse code (CW) communication. The RST code consists of three numbers, each representing a different aspect of the received signal. The "C" appended to the RST report in CW stands for "Chirpy" or "unstable signal."

Question 15: Which of the following, when compared to other analog voice modes on the HF amateur bands, is a benefit of single sideband use?

Less subject to interference from atmospheric static crashes
Less bandwidth used and greater power efficiency (Correct answer)
Very high fidelity voice modulation
Ease of tuning on receive and immunity to impulse noise

Correct answer: Less bandwidth used and greater power efficiency

The benefit of single sideband (SSB) use, when compared to other analog voice modes on the HF amateur bands, is less bandwidth used and greater power efficiency. Single sideband is a modulation technique used in radio communications that suppresses one of the sidebands (upper or lower) and the carrier while transmitting. Only the remaining sideband is transmitted, which significantly reduces the occupied bandwidth compared to other analog voice modes like AM (Amplitude Modulation).

Question 16: A directional wattmeter can be used to determine which of the following?

Radio wave propagation
Antenna front-to-back ratio
RF interference
Standing wave ratio (Correct answer)

Correct answer: Standing wave ratio

A directional wattmeter can be used to determine the Standing Wave Ratio (SWR) of an antenna system. SWR is a measure of how well an antenna is matched to the transmission line and the transmitter's output impedance. It is defined as the ratio of the maximum voltage (or current) in the standing wave pattern to the minimum voltage (or current). A perfect match would result in an SWR of 1:1, indicating that all the power from the transmitter is being efficiently delivered to the antenna without any reflections or power losses.

Free Ham Radio Technician License Questions and Answers

The Radio Amateur Civil Emergency Service (RACES) is what, exactly?