If the output frequency after passing...

Question 1 / 27070Xi1Fif8a0sMRWwPSnXpf

Question 1 of 27070Xi1Fif8a0sMRWwPSnXpf

If the output frequency after passing through three doubler stages is 16,800 kHz, give the crystal frequency of a transmitter:

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Question 1 of 27070

If the output frequency after passing through three doubler stages is 16,800 kHz, give the crystal frequency of a transmitter:

🔍 Key Concepts

• Frequency multipliers (doublers) and how they affect the original (crystal) frequency • Relationship between output frequency and number of doubler stages (each stage multiplies by 2) • How to work backwards from a multiplied frequency to find the original frequency

💭 Think About

• What is the total multiplication factor after the signal passes through three doubler stages? Express it as a single number. • Once you know that factor, how do you reverse it to get from 16,800 kHz back to the original crystal frequency? Write the key equation. • After finding the original frequency, which option is closest in both value and units to your result?

✅ Before You Answer

• Confirm how many times the frequency is multiplied by 2 after three doubler stages. • Compute the crystal frequency as: crystal frequency = output frequency ÷ total multiplication factor. • Check that the unit (kHz vs GHz vs kHz very small) in your chosen option matches a realistic crystal frequency for this problem.

Question 1 of 27070

If the output frequency after passing through three doubler stages is 16,800 kHz, give the crystal frequency of a transmitter:

2160 kHz

2 GHz

2110 kHz

2 kHz