Radio Receivers
When a receiver has good blocking performance, this means that

Its detector suffers from burnout
It is unaffected by AGC derived from nearby transmissions
It does not suffer from double-spotting
Its image frequency rejection is poor

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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

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Radio Receivers
The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency

Because otherwise an intermediate frequency could not be produced
To allow adequate frequency coverage without switching
To help the image frequency rejection
To permit easier tracking

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