Koodhka Morse, xarafka "F" waxaa lagu matalaa taxanaha ..-. Tani waxay u tarjuntay:
Sida kale, waxaa ku jira laba calaamadood (dhibico), calaamad dheer (xariiq), iyo calaamad gaaban kale (dhibic). Isku-darkaasi waxa loo isticmaalaa Koodhka Morse si loo matalo xarafka "F" ee labadaba telegraphy iyo isgaarsiinta raadiyaha.