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hardILS

The localizer uses which modulation tones?

Q: The localizer uses which modulation tones?

90 Hz and 150 Hz. The ILS localizer uses 90 Hz and 150 Hz modulation tones. The 90 Hz predominates on the left of centerline (facing the runway) and 150 Hz on the right.

400 Hz and 1300 Hz

30 Hz and 9960 Hz

90 Hz and 150 Hz

1020 Hz and 3000 Hz

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