🔍 Key Concepts

• VHF radio squelch control purpose and how it affects what you can hear • Relationship between squelch setting and receiver sensitivity • Difference between background noise and actual radio signals

💭 Think About

• When you turn squelch up until noise just disappears, are you blocking weak signals, strong signals, or none? • How would turning the squelch further past that point change the receiver’s ability to hear distant/weak stations? • Which choice best describes the situation right at the point where noise disappears, not far beyond it?

✅ Before You Answer

• Make sure you know that more squelch = more blocking of weak signals • Confirm which option describes maximum ability to receive weak signals while still removing noise • Eliminate any answers that talk about bandwidth change, since squelch does not change receiver bandwidth