Description : One of the following is a high powered RF ac basic transmitter that has two or more stages, the oscillator stage which determines the frequency opereation and RF amplifier stage orstages that develop the ... to develop a good frequency stability. A. Goldsmith B. MOPA C. Alexanderson D. Hartley
Last Answer : B. MOPA
Description : What transmission method uses a stable cw reference oscillator, which is locked in phase with the transmitter frequency?
Last Answer : Pulse-Doppler.
Description : What factor determines the difference between the transmitted frequency and the received frequency in an fm transmitter?
Last Answer : Travel time.
Description : The beat frequency in a swept-frequency transmitter provides what contact information?
Last Answer : Range.
Description : In an fm transmitter, when does an oscillator generate only a steady frequency?
Last Answer : When no modulation is present.
Description : What purpose does a microphone perform in an AM transmitter?
Last Answer : It converts audio (sound) into electrical energy.
Description : What factors determine the value of the multiplier resistor?
Last Answer : The current required for full-scale deflection, and the range of the voltage to be measured.
Description : What frequency band is referred to as the metric waves? A. VHF B. UHF C. HF D. SHF
Last Answer : A. VHF
Description : What is the frequency range of an aircraft’s Very High Frequency (VHF) communications? A. 118.000 MHz to 136.975 MHz (worldwide up to 151.975 MHz) B. 108.000 MHz to 117.95 MHz C. 329.15 MHz to 335.00 MHz D. 2.0000 MHz to 29.999 MHz
Last Answer : A. 118.000 MHz to 136.975 MHz (worldwide up to 151.975 MHz)
Description : Which frequency band is the standard AM radio broadcast? A. HF B. UHF C. MF D. VHF
Last Answer : C. MF
Description : Very High Frequency (VHF) have ----- wavelengths? A. shorter (Answer) B. shortest
Last Answer : A. shorter (Answer)
Description : In what frequency band is the ATIS normally broadcasted? a. LF b. HF c. ADF d. VHF
Last Answer : d. VHF
Description : The frequency on which ATIS can be found is: a. Discrete VHF or VOR frequency b. Discrete VHF only c. VOR frequency only d. Any ATC frequency
Last Answer : a. Discrete VHF or VOR frequency
Description : The frequency band of the ILS glidepath is: a. UHF b. VHF c. SHF d. VLF
Last Answer : a. UHF
Description : What is the frequency range of VHF electromagnetic waves? A) 30-300 kHz B) 30-3000 kHz C) 30-300 MHz D) 30-3000 MHz
Last Answer : What is the frequency range of VHF electromagnetic waves? A) 30-300 kHz B) 30-3000 kHz C) 30-300 MHz D) 30-3000 MHz
Description : Which of the following is the basic synthesizer circuit? A. Frequency divider B. Frequency multiplier C. PLL D. Mixer
Last Answer : C. PLL
Description : What precaution should you take when substituting a synchro tester in a circuit for a transmitter?
Last Answer : Use only one receiver so as not to overload the tester.
Description : What is the most likely problem if the transmitter shaft reads 0º when the receiver shaft indicates 180º?
Last Answer : The rotor leads on either the transmitter or the receiver are reversed.
Description : What is the relationship between the transmitter and receiver stator voltages when their rotors are in correspondence?
Last Answer : The voltages are equal and oppose each other.
Description : What is the physical difference between a synchro transmitter and a synchro receiver?
Last Answer : A synchro receiver uses some form of damping to retard excessive oscillations or spinning.
Description : Describe the zero-position of a synchro transmitter.
Last Answer : The transmitter is in its zero-position when the rotor is aligned with the S2 stator winding.
Description : What unit of measurement refers to the torque of a synchro transmitter
Last Answer : Ounce-inches.
Description : What are some disadvantages of operating a transmitter at or near the muf?
Last Answer : Frequent signal fading and dropouts.
Description : What are three ways of controlling the amount of transmitter-generated emi?
Last Answer : (a) filtering and shielding of the transmitter (b) limiting bandwidth (c) cutting the antenna to the
Description : Transmitter power readings are most often referenced to what power level?
Last Answer : 1 milliwatt.
Description : Where should the transmitter spectrum be located with respect to the receiver response curve?
Last Answer : In the center.
Description : The spectrum of a radar transmitter describes what characteristic of the output pulse?
Last Answer : Frequency distribution
Description : Immediately after the transmitter fires, stc reduces the receiver gain to what level?
Last Answer : Zero.
Description : What type of klystron is used as the final stage of a power- amplifier transmitter?
Last Answer : Multicavity klystron.
Description : What controls transmitter pulse width?
Last Answer : The modulator.
Description : What transmitter component allows the radiation of a large number of discrete frequencies over a wide band?
Last Answer : . Frequency synthesizer.
Description : In an externally synchronized radar, what determines the prr of the transmitter?
Last Answer : The master oscillator.
Description : When a transmitter uses a high-power oscillator to produce the output pulse, what switches the oscillator on and off?
Last Answer : High-voltage pulse from the modulator.
Description : What type of radar transmitter power is measured over a period of time?
Last Answer : Average power.
Description : What vswr is a perfect match between a transmitter and its load?
Last Answer : 1 to 1.
Description : What is the result of an impedance mismatch between a receiver or transmitter and its transmission line or antenna?
Last Answer : High vswr, which equates to poor reception or a loss of power output.
Description : All the power sent down a transmission line from a transmitter can be transferred to an antenna under what optimum conditions?
Last Answer : When the characteristic impedance of the transmission line and the load impedance are equal.
Description : What term is used for the end of the transmission line that is connected to a transmitter?
Last Answer : Input end, generator end, transmitter end, sending end, and source.
Description : What connecting link is used to transfer energy from a radio transmitter to its antenna located on
Last Answer : Transmission line.
Description : List five common fiber optic transmitter packages.
Last Answer : TO can, DIP, butterfly lead microcircuits, circuit cards, and stand-alone optical fiber converters.
Description : Which part of a fiber optic transmitter converts the processed electrical signal to an optical signal?
Last Answer : The optical source.
Description : What are the three parts of a fiber optic transmitter?
Last Answer : Interface circuit, source drive circuit, and an optical source.
Description : What is the range of earth terminal transmitter output power?
Last Answer : Up to 20 kilowatts.
Description : What is the final stage of a transmitter?
Last Answer : Power amplifier.
Description : What is the function of the oscillator in a cw transmitter?
Last Answer : It generates an rf carrier at a given frequency within required limits.
Description : What are the four basic transmitter types?
Last Answer : Am, fm, cw, ssb.