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If a station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is primarily accountable for the rules violation?
Which of the following constitutes a spurious emission?
What is meant by automatic control of a station?
Which amateur stations are eligible to operate as Earth stations?
To which of the following examinees may a VE not administer an examination?
What is the maximum permitted transmitter peak envelope power for an amateur station transmitting spread spectrum communications?
What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation?
How are analog SSTV images typically transmitted on the HF bands?
Why might a DX station state that they are listening on another frequency?
What is one advantage of using JT65 coding?
How is the timing of JT65 contacts organized?
Which of the following is required for microwave propagation via rain scatter?
What is meant by the terms extraordinary and ordinary waves?
What does the term ray tracing describe in regard to radio communications?
What determines the upper frequency limit for a computer soundcard-based oscilloscope program?
What is indicated if the current reading on an RF ammeter placed in series with the antenna feed line of a transmitter increases as the transmitter is tuned to resonance?
Which of the following is a desirable amount of selectivity for an amateur SSB phone receiver?
Why are third-order intermodulation products created within a receiver of particular interest compared to other products?
Which is the most likely cause if you are hearing combinations of local AM broadcast signals within one or more of the MF or HF ham bands?
What is the magnitude of the current at the input of a series RLC circuit as the frequency goes through resonance?
What is the relationship between the current through an inductor and the voltage across an inductor?
What coordinate system is often used to display the resistive, inductive, and/or capacitive reactance components of impedance?
How can the true power be determined in an AC circuit where the voltage and current are out of phase?
Why does a PN-junction diode not conduct current when reverse biased?
What type of bias is required for an LED to emit light?
In Figure E6-5, what is the schematic symbol for a NAND gate?
What is the common name for a capacitor connected across a transformer secondary that is used to absorb transient voltage spikes?
What is a characteristic of DIP packaging used for integrated circuits?
Which describes an optical shaft encoder?
Which is a bi-stable circuit?
Why are switching amplifiers more efficient than linear amplifiers?
Which of the following factors has the greatest effect in helping determine the bandwidth and response shape of a crystal ladder filter?
What is one characteristic of a linear electronic voltage regulator?
What is the function of a reactance modulator?
Which of the following is an advantage of a Finite Impulse Response (FIR) filter vs an Infinite Impulse Response (IIR) digital filter?
What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 1800 ohms and RF is 68 kilohms?
What are three oscillator circuits used in Amateur Radio equipment?
Why would a direct or flash conversion analog-to-digital converter be useful for a software defined radio?
What is digital time division multiplexing?
What is the relationship between symbol rate and baud?
What is considered a good minimum IMD level for an idling PSK signal?
What antenna has no gain in any direction?
What type of information can be obtained by submitting the details of a proposed new antenna to a modeling program?
What is the effect of a terminating resistor on a rhombic antenna?
Which of the following would provide the best RF ground for your station?
What term best describes the interactions at the load end of a mismatched transmission line?
What is the velocity factor of a transmission line?
What is the process of normalization with regard to a Smith chart?
What is an advantage of using a shielded loop antenna for direction finding?
When evaluating a site with multiple transmitters operating at the same time, the operators and licensees of which transmitters are responsible for mitigating over-exposure situations?