🔍 Key Concepts

• Receiver sensitivity in marine radios (how weak a signal the receiver can still detect) • Effect of strong nearby/adjacent channel signals on a receiver • Difference between desensitizing, intermodulation distortion, and overloading as radio problems

💭 Think About

• Ask yourself: which term specifically describes the receiver becoming less able to hear weak signals because a strong signal on a nearby frequency is present? • Which option refers more to the mixing/creation of spurious signals, rather than just making the receiver less sensitive? • Which term is normally used for FM receivers becoming quieter (less noise) as signal strength increases, and is that what the question is asking about?

✅ Before You Answer

• Verify which option is directly defined in radio theory as a reduction in receiver sensitivity due to strong signals on adjacent channels. • Check that you are not confusing distortion of signals (changing their shape or creating extra signals) with simply making the receiver ‘deaf’ to weak ones. • Confirm that quieting usually refers to reduced noise with stronger desired signal, not a problem caused by unwanted adjacent-channel signals.