1A
What is used to tell the time to complete one waveform cycle
The PERIOD of the waveform
What is the simplest form of modulation
PAM(Pulse Amplitude Modulation)
What is a sidetone
Reciprocity, Gain, Efficiency, Arrays
What is Reactance
An Electrical circuits opposition to the flow of AC and is made up of the Inductance and Capacitance.
Radio frequency and Audio Frequency spectrum
400hz-15000hz for Audio and 20kHz-300GHz
What is the purpose of an Oscillator
Generate a stable waveform with a constant amplitude and frequency
Synthesizer is considered the what of the any radio system
The "Heart"
What are the primary components of an EMW
and Electric Field(E-lines) and a Magnetic field(H-lines)
Describe a Dual coaxial Cable
A cable that is strapped up with 2 coaxial cables with a common shield and a braided shielding on each inner conductor
What is amplitude Modulation
Modulation in which the instantaneous amplitude of a carrier is varied according to the instantaneous amplitude and frequency of the intelligence signal
What are the 4 element that make up and Oscillator
Power Supply, Amplifier, Regenerative Feedback, Frequency Determining Device
What are the 3 stages to the synthesizer
Reference Oscillator stage, Phase Lock Loop stage, Amplifier stage
What is propagation defined as
A manner in which an electromagnetic wave travels though a medium
What is Shunt Resistance
The loop resistance of the center conductor and is inversely proportional to the area through which current flows
What are the 2 rules for frequency deviation
The AMOUNT of frequency shift of the carrier is proportional to the amplitude of the modulating signal.
The RATE of frequency shift of the carrier is proportional to the frequency of the modulating singal
What is the flywheel effect
The interaction of a capacitor and an inductor, in a parallel circuit that supports the maintenance of oscillations
What stage of an AM Trasnsmitter isolates the synthesizer from the multiplier and amplifier loads reducing variations to the load of the synthesizer
The Buffer
What are the 4 types of ways propagation interacts with the world
Reflection, Refraction, Diffraction, Recombination
What is the difference between a shielded pair and a Twin Coaxial cable
The Shielded Pair has it's center conductors in parallel versus The Twin Coaxial cable and be twisted.
Signal Distortion
What and how does the crystal Oscillator work?
Using a crystal to control the output by using the piezoelectric effect
What are the advantages of SSB transmitter
Frequency spectrum Conservation, Power efficiency, and Durability of signal
What are the 3 ways we transmit RF waves
Ground Waves, Direct Waves, and Sky Waves
What are 5 things RF cables made up of
Inner Conductor, Dielectric Insulator, Outer conductor, Jacket, Armor