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Question 162

What is the purpose of using a receive attenuator?

  1. To prevent receiver overload from strong incoming signalsBonne réponse
  2. To reduce the transmitter power when driving a linear amplifier
  3. To reduce power consumption when operating from batteries
  4. To reduce excessive audio level on strong signals

Explication

A receive attenuator inserts a fixed loss ahead of the first amplifier stage, keeping strong incoming signals below the point where the front end leaves its linear range and creates unwanted mixing products and desensitisation. It affects only the receive path, so it does nothing to transmitter drive or battery drain.

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