Amateur Extra › E2 Operating Procedures › E2E04
E2E04
Which of the following is characteristic of the FST4 mode?
Pick an answer to check it.
Answer: D. All these choices are correct
FST4 uses four-tone Gaussian FSK, offers several transmit/receive periods, and has different tone spacings for each period. All these choices are correct.
Tip: FST4: four tones, flexible periods.