What is the effective radiated power of a...

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Question 1 of 20Lmth54OXRCQVFaOudjFO

What is the effective radiated power of a repeater with 100 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain?

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Question 1 of 20

Lmth54OXRCQVFaOudjFO

What is the effective radiated power of a repeater with 100 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain?

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🔍 Key Concepts

• Effective Radiated Power (ERP) and how gains/losses in dB affect it • Converting dB values to power ratios (remember that dB for power uses 10·log10) • How to add and subtract dB for a signal chain (transmitter → losses → antenna gain)

💭 Think About

• How do you combine multiple dB values along a signal path that includes both losses and gains? • Once you have a total dB change, how do you convert that back into a numeric power ratio to apply to the original 100 W? • Which answer choices are clearly too big or too small when you consider that total losses are greater than, equal to, or less than the antenna gain?

✅ Before You Answer

• Be sure to add the losses (feedline + duplexer/circulator) and then subtract them from the antenna gain to find the net dB change. • Convert the net dB value into a linear power factor before multiplying by 100 W. • Verify that your final ERP makes sense: with more loss than gain you should get less than 100 W, with more gain than loss you should get more than 100 W.

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Question 1 of 20Lmth54OXRCQVFaOudjFO

What is the effective radiated power of a repeater with 100 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain?

Back

Question 1 of 20

Lmth54OXRCQVFaOudjFO

What is the effective radiated power of a repeater with 100 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain?

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?

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