Furuno FA-100 Installation Manual page 29

9. Enter ship's name, using up to 20 alphanumeric characters. To switch between
alphabet and numerical character, press the [SFT] key. To enter an alphabet,
press corresponding key several times until desired letter is displayed. For
example, if you press the [2] key continuously, the character A, B and C appear
cyclically. If you want to enter the same letter or an other letter with the same
key (for example, AA or AC), press the [6] key while pressing the [SFT] key, to
send the cursor to the next position.
10. Press the [NEXT] key to select C.SIGN.
11. Enter call sign, using up to seven alphanumeric characters.
12. Press the [ENT] key to register data. The INIT SETTINGS sub-menu appears.
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