Amateur Extra › E2 Operating Procedures › E2E10
E2E10
Which of these digital modes has the narrowest bandwidth?
Pick an answer to check it.
Answer: C. FT8
FT8 uses about 50 Hz of bandwidth, narrower than MFSK16 (about 316 Hz), 170 Hz shift RTTY (about 250 Hz or more), and PACTOR IV (about 2.4 kHz).
Tip: FT8 is skinny: about 50 Hz.