GeneralG4A13
What is the purpose of using a receive attenuator?
A
Answer
Amateur station equipment
Type
A
To prevent receiver overload from strong incoming signals
B
To reduce the transmitter power when driving a linear amplifier
C
To reduce power consumption when operating from batteries
D
To reduce excessive audio level on strong signals
Answer Notes
An attenuator is an electronic circuit or device that intentionally reduces the amplitude or power of a signal. In a receiver, an attenuator is placed early in the signal path, usually just after the antenna connection and before the sensitive amplifier stages.
The primary purpose of a receive attenuator is to protect the receiver's front-end circuitry from being overwhelmed by exceptionally strong incoming signals, such as those from a nearby transmitter. If the receiver is overloaded, it can cause distortion, desensitization, or intermodulation interference across the band.
While an attenuator does reduce signal levels, it is not used for reducing transmitter output power, lowering battery consumption, or simply turning down the audio volume (which is done by the AF gain control).
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Which of the following is a common use of the dual-VFO feature on a transceiver?
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What item of test equipment contains horizontal and vertical channel amplifiers?