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Radio Receivers
In a ratio detector
the output is twice that obtainable from a similar phase discriminator
the linearity is worse than in phase discriminator
stabilization against signal strength variations is provided
the circuit is the same as in a discriminator, except that the diodes are reversed
the output is twice that obtainable from a similar phase discriminator
the linearity is worse than in phase discriminator
stabilization against signal strength variations is provided
the circuit is the same as in a discriminator, except that the diodes are reversed
Answer
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Related Question
Radio Receivers
A receiver has poor IF selectivity. It will therefore also have poor
Blocking
Double-spotting
Diversion reception
Sensitivity
Blocking
Double-spotting
Diversion reception
Sensitivity
Answer
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Radio Receivers
Indicate the false statement in connection with communications receivers.
Variable sensitivity is used to eliminate selective fading
The noise limiter cuts off the receiver’s output during a noise pulse.
A product demodulator could be used for the reception of Morse code.
Double conversion is used to improve image rejection
Variable sensitivity is used to eliminate selective fading
The noise limiter cuts off the receiver’s output during a noise pulse.
A product demodulator could be used for the reception of Morse code.
Double conversion is used to improve image rejection
Answer
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Radio Receivers
Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that
Production of AGC is a rather complicated process
Adjacent-channel rejection is more difficult
The receiver cannot use a phase comparator for AFC
The transmission is not compatible with A3E
Production of AGC is a rather complicated process
Adjacent-channel rejection is more difficult
The receiver cannot use a phase comparator for AFC
The transmission is not compatible with A3E
Answer
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Radio Receivers
Indicate the false statement. The superheterodyne receiver replaced the TRF receiver because the latter suffered from
Insufficient gain and sensitivity
Inadequate selectivity at high frequencies
Gain variation over the frequency coverage range
Instability
Insufficient gain and sensitivity
Inadequate selectivity at high frequencies
Gain variation over the frequency coverage range
Instability
Answer
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Radio Receivers
One of the following cannot be used to demodulate SSB:
Bipolar transistor balanced modulator
Product detector
Diode Balance modulator
Complete phase-shift generator
Bipolar transistor balanced modulator
Product detector
Diode Balance modulator
Complete phase-shift generator
Answer
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