License Flashcards
16 cards from real Ham Radio Technician Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 16 License flashcards as text
The Radio Amateur Civil Emergency Service (RACES) is what, exactly?
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.
Where may an amateur SSB phone be used above 50 MHz?
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.
How soon can you transmit on amateur radio bands after passing the test for your first amateur radio license?
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.
How is broadcasting for the Amateur Radio Service defined by the FCC?
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.
By Part 97, which of the following is an example of remote control?
Answer: Operating the station over the internet
Explanation: A remote control scenario would be to run the station online.
If a repeater unintentionally retransmits communications that are forbidden by the FCC, who is responsible?
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.
What, beyond the FCC-established privileges, is a band plan?
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.
How can bias affect the light that an LED emits?
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.
Which of the following can be altered to improve a Yagi antenna's forward gain, front-to-back ratio, or SWR bandwidth?
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.
Why does a transmitter keying circuit occasionally have a time delay?
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.
Why is a series diode linked between a solar panel and a storage battery that the panel is using to charge?
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."
Which HF/MF bands are all amateur frequency privileges available to General class license holders?
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.
What limitations apply to the use of procedural signals or abbreviations in the amateur service?
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.
What does a "C" appended to the RST report while sending CW mean?
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."
Which of the following, when compared to other analog voice modes on the HF amateur bands, is a benefit of single sideband use?
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).
A directional wattmeter can be used to determine which of the following?
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.