NotTaR of Television Sets : What is the maximal allowed deviation of..  
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What is the maximal allowed deviation of the horizontal frequency?

(The following is from: Peter Bennett VE7CEI (bennett@triumf.ca))

In Canada and the US (525 line, 60 HZ, NTSC), the horizontal frequency is 15,734.264 Hz. The colour subcarrier is 455/2 times the horizontal frequency which should come to 3.579545 MHz. I believe the tolerance on the subcarrier frequency is +/- 10 Hz.