The phase locked loop circuit in an MF/HF...

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Question 1 of 20nbKD9ByGoJa8vkfMaazm

The phase locked loop circuit in an MF/HF receiver appears to be faulty. What is the most likely cause?

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Question 1 of 20

nbKD9ByGoJa8vkfMaazm

The phase locked loop circuit in an MF/HF receiver appears to be faulty. What is the most likely cause?

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🔍 Key Concepts

• Phase-Locked Loop (PLL): how it keeps a local oscillator locked to a reference frequency • Role of a Voltage Controlled Oscillator (VCO) inside a PLL • Difference between circuits that affect detection (BFO, filters, AGC) vs circuits that control tuning/locking

💭 Think About

• In a PLL, which single sub‑circuit actually changes frequency in response to a control voltage? • Which of the listed options is an essential internal part of a PLL, rather than a separate function like filtering or audio control? • If a receiver cannot stay locked on frequency, which type of component failure would most directly cause loss of lock?

✅ Before You Answer

• Identify which choice is the core tunable element in a PLL • Confirm which items (AGC, BFO, I.F. filter) mainly affect signal level or demodulation, not frequency locking • Make sure the option you pick is something that exists inside the PLL loop rather than elsewhere in the receiver

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Question 1 of 20nbKD9ByGoJa8vkfMaazm

The phase locked loop circuit in an MF/HF receiver appears to be faulty. What is the most likely cause?

Back

Question 1 of 20

nbKD9ByGoJa8vkfMaazm

The phase locked loop circuit in an MF/HF receiver appears to be faulty. What is the most likely cause?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed