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Modulator
Demodulator
Variable gain amplifier
Multiplexer
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The voltage ratio
Decibels
The modulation index
The mix factor
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Trace
Waveshape
Envelope
Carrier variation
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Normal operation
Carrier drops to zero
Carrier frequency shifts
Information signal is distorted
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Vm is greater than Vc
Vm is lesser than Vc
Vm=Vc
Vm=Vc=0
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Multiplexing
Modulation
Duplexing
Linear Mixing
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Multiplication
Addition
Division
Square root
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M=0
M=1
M is greater than 1
M is lesser than 1
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Carrier
Upper Sideband
Lower Sideband
Modulating Signal
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Spurious emissions
Harmonics
Intermodulation products
Sidebands
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4.5 KHz
6.75 KHz
9 KHz
18 KHz
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10.7 percent
41.4 percent
80.6 percent
93.3 percent
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50 Hz to 5 KHz
50 Hz to 15 KHz
100 Hz to 10 KHz
300 Hz to 3 KHz
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Carrier plus sidebands
Carrier only
One sideband
Both sideband
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1.8MHz
3.2MHz
5MHz
6.8MHz
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The carrier amplitude varies
The carrier frequency remains constant
The carrier frequency changes
The information signal amplitude changes the carrier amplitude
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873 and 887 KHz
876.5 and 883.5 KHz
883.5 and 876.5 KHz
887 and 873 KHz
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85W
110W
170W
610W
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0.8W
1.6W
2.5W
4.0W
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Frequency multiplication
Frequency division
Frequency shift
Frequency conversion
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35 percent
70 percent
42 percent
89 percent
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Carrier
Modulating Signal
Sidebands
Envelope
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Less spectrum space is used
Simpler equipment is used
Less power is consumed
A higher modulation percentage
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Average power
RMS power
Peak to peak power
Peak envelope power
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150 to 450W
100 to 300W
250 to 333W
3 to 4KW
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SSB
Vestigial Sideband
FM signal
DSB
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25 percent
33.3 percent
50 percent
100 percent
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Carrier power
Bandwidth
Sideband power
Envelope voltage
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A 3.8485MHz sine wave
A 3.85MHz sine wave
3.85, 3.8485 and 3.8515 MHz sine waves
3848.5 and 3851.5MHz sine waves
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192.2W
384.5W
769.2W
3077W
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Translator
Converter
Balanced Modulator
Local Oscillator
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Upper
Lower
Neither
Depends upon the use
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Time domain
Frequency domain
Amplitude spectrum
Frequency domain
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