What is the cross over frequency at which higher video frequencies are emphasized prior to modulation at the transmitter and de-emphasized at the receiver in NHK broadcast?

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Question:
What is the cross over frequency at which higher video frequencies are emphasized prior to modulation at the transmitter and de-emphasized at the receiver in NHK broadcast?

1.5.2 MHz for Y, 1.6 MHz for C

2.6.2 MHz for Y, 3.6 MHz for C

3. 9.5 MHz for Y, 6.6 MHz for C

4.7.5 MHz for Y, 0.3 MHz for C

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