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WorksheetsBlock 4 - 1I - Receivers and Transmitters
Total questions: 11
Worksheet time: 6mins
What is the main purpose of radios in aircrafts?
To communicate with ground and other air crafts
To communicate with gnomes
To communicate with speakers and headphones
To communicate with animals
What is the purpose of receivers and transmitters?
To modulate the transmitted signal and demodulate the received signal
To modulate the USB and demodulate the LSB
To modulate the RF transmitter and demodulate intelligence signals
To regulate the voltage RF transmitters are receiving
In our work book, basic comm systems have how many components?
7
6
8
12
What is the purpose of the control unit?
To act as an interface between the operator and their comm system
To act as an interference between the operator and the R/T
To act as an interface between the operator and the R/T
The purpose of the synthesizer is…
To provide the carrier frequency for the transmitter section and the injection frequency for the control unit
To generate stable and precise frequencies for use by both the receiver and transmitter sections
To allow the R/T to transmit intelligence on or around the selected frequency
To create the injection frequency to be used in the receiver section to create and IF Frequenycy in the receiver section
The Transmitter section does what?
Modulates the carrier frequency from the flight crew’s microphone and transmits it out the antenna
Uses the flight crew’s microphone to create a shock wave to shut off the enemy antenna
Modulates the carrier frequency to create a thunder storm
Modulated the carrier frequency from the flight crew’s microphone and transmits it out the reciever
Selectivity is…
The ability to select one frequency among many closely spaces frequencies
The ability to remove undesirable amplitude deviations of the signal
The ability to provide gain to incoming signals from the demodulator
The ability to provide gain to the to the incoming IF from the RF mixer
Sensitivity is..
The measure of a receiver’s ability to pick up very weak signals
The ability to amplify very small AC voltages received by the antenna for use by other stages in the reciever
The ability to heterodyne the receiver RF signal with the injection frequency from the synthesizer to produce a lower frequency
The ability to attach the intelligence to the transmitted signal
The ability to extract the intelligence from the transmitted signal
Which component is described as a “Lawn Mower?”
The RF Amplifier
The Peak Limiter
The Audio Amplifier
The Synthesizer
Which component produces four frequencies?
The RF Mixer
The IF Amplifier
The Demodulator
The Audio Amplifier
Radio frequency is within what range?
20kHZ-300GHz
15Hz-20KHz
