To operate D-STAR, you must first enter your call sign into a MY call sign memory. You can enter up to 6 MY call signs, into MY call sign memory [MY1] ~ [MY6].

Example: Enter “JA3YUA” as your own call sign into [MY1].

Steps for ICOM ID-4100A

Step 1: Display the MY CALL SIGN edit screen

My Station > My Call Sign

  1. Push [MENU].

  2. Rotate [DIAL] to select “My Station,” then push [ENTER/SET].
    • Displays the MY STATION screen.

  3. Select “My Call Sign,” then push [ENTER/SET].
    • Displays the MY CALL SIGN screen.

  4. Select MY call sign memory, then push [QUICK].
    (Example: “1:”)

  5. Select “Edit,” then push [ENTER/SET].
    • Displays the MY CALL SIGN edit screen.

    (Example: MY CALL SIGN (MY1*))
    *The memory number selected in step 4 is displayed.

Step 2: Enter your own call sign

  1. Enter your own call sign, then push [ENTER/SET].
    • Sets the entered call sign.


  2. Select the entered call sign, then push [ENTER/SET].
    • Sets the call sign to be used as MY call sign.


  3. Push [MENU].
    • Returns to the standby screen.

Operations for a text entry

Tip: Add Model Number

You can enter a note of up to 4 characters, such as the model of the transceiver, name, area name, and so on, after your call sign.


1. After entering a call sign, push [MW] several times until the cursor moves to the right of the “/.”


2. Enter a 4 character note. (Example: 4100)

Steps for ICOM ID-5100A

Step 1: Displays the MY Call Sign edit screen

  1. Touch [MENU].

  2. Touch [My Call Sign].
    (My Station > My Call Sign)
    • If the item is not displayed, touch [UP ARROW] or [DOWN ARROW] one or more times to select the page.




  3. Touch the MY call sign memory channel “1” ([MY1]) for 1 second.


  4. Touch “Edit.”
    • Opens the “MY CALL SIGN (MYM)” edit screen. The channel number selected in step 3 is displayed on ‘*.’
    • A cursor appears and blinks.


Step 2: Enter the call sign

  1. Touch the desired keypad to select the first digit. (Example: J).
    • A to Z, 0 to 9, / and (Space) are selectable.
    • Touch “ab⇔12” to toggle between the Alphabet entry and Number entry modes.
    • Touch [CLR] to delete the selected character, symbol or number.
    • Touch “SPACE” to enter a space.
    • Touch [QUICK], and then touch “Switch to Tenkey” to switch the keyboard type.


  2. Touch [BACK ARROW] to move the cursor backwards, or touch [FORWARD ARROW] to move the cursor forwards.

  3. Repeat steps 1 and 2 to enter your call sign of up to 8 characters, including spaces.
    (Example: First J, then A, then 3, then Y, then U, then A) 

Step 3: Save the call sign

  1. Touch [ENT].
    • Saves the entered call sign and returns to the “MY CALL SIGN” screen.
    • See “Tip” below if you want to enter a note.
  2. Touch the entered call sign.
    • Sets the call sign to be used as MY call sign.


  3. Touch [MENU].
    • Closes the “MY CALL SIGN” screen.

Tip: Add Model Number

If desired, enter a note of up to 4 characters, such as the model of the transceiver, name, area name, and so on, after your call sign.

  1. Touch [FORWARD ARROW] one or more times until the cursor moves to the right of the “/”.

  2. Repeat steps to enter a 4 character note. (Example: 5100)