What condition may exist if a VHF radio is...

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Question 1 of 20dIoE6cbsGGPEG145hGnm

What condition may exist if a VHF radio is operational in receive mode but unable to transmit?

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Question 1 of 20

dIoE6cbsGGPEG145hGnm

What condition may exist if a VHF radio is operational in receive mode but unable to transmit?

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🔍 Key Concepts

• Transmit vs. receive signal paths inside a VHF set • Function of the Push-To-Talk (PTT) circuit in switching from receive to transmit • What the antenna relay / protection circuits actually do and when they act

💭 Think About

• Think about which circuits are ONLY used when you are transmitting but not when you are receiving. • Ask yourself: when you press the PTT, what has to change inside the radio for the set to go from receive mode to transmit mode? • Consider whether protection circuits like SWR or bias faults would usually block transmit completely, or more likely cause other symptoms (like distorted output, overheating, or damage).

✅ Before You Answer

• Identify which option directly controls the radio’s changeover from receive to transmit. • Decide which component failure would still allow normal reception but prevent any RF from being generated or switched to the antenna. • Verify which choices describe conditions that would more likely cause poor or unsafe transmission, not a total inability to key up and transmit.

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Question 1 of 20

What condition may exist if a VHF radio is operational in receive mode but unable to transmit?

Excessive bias is being applied to switching transistors in the transmitter output stage.

The solid-state antenna relay is no longer functioning properly.

A component in the Push-To-Talk ( PTT ) circuit has failed .

The SWR protection circuit has engaged to prevent transmission.

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Question 1 / 20dIoE6cbsGGPEG145hGnm

Question 1 of 20dIoE6cbsGGPEG145hGnm

What condition may exist if a VHF radio is operational in receive mode but unable to transmit?

Back

Question 1 of 20

dIoE6cbsGGPEG145hGnm

What condition may exist if a VHF radio is operational in receive mode but unable to transmit?

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

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