GMDSS Maintainer: Element 9

1. A Ratio detector, master oscillator, limiting amplifier and voltage controlled oscillator.
2. B Phase comparator, loop filter, master oscillator and first mixer stage.
3. C High pass filter, master oscillator, double balanced mixer and voltage controlled oscillator.
4. D Master oscillator, frequency dividers, phase comparator, loop filter and voltage controlled oscillator.

Tip: press A-D to answer