Invalid Call Sign Requests

Last updated Monday, January 17, 2022 6:38:31 AM (Arizona)
Monday, January 17, 2022 1:38:31 PM (UTC)

Applications

Invalid Call Signs

This page shows the FCC guidelines for calls which are not available for requesting on an FCC application followed by the invalid call signs which have been requested in the last month and the rule they are in violation of.

The following call signs are not available for assignment and therefore any request for call signs in the following categories are invalid and will be denied.

  1. KA2AA-KA9ZZ, KC4AAA-KC4AAF, KC4USA-KC4USZ, KG4AA-KG4ZZ, KC6AA-KC6ZZ, KL9KAA- KL9KHZ, KX6AA-KX6ZZ;
  2. Any call sign having the letters SOS or QRA-QUZ as the suffix;
  3. Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU);
  4. Any 2-by-3 format call sign having the letter X as the first letter of the suffix;
  5. Any 2-by-3 format call sign having the letters AF, KF, NF, or WF as the prefix and the letters EMA as the suffix (U.S Government FEMA stations);
  6. Any 2-by-3 format call sign having the letters AA-AL as the prefix;
  7. Any 2-by-3 format call sign having the letters NA-NZ as the prefix;
  8. Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs);
  9. Any 2-by-3 format call sign having the letters KP, NP or WP as the prefix and the numeral 0, 6, 7, 8 or 9;
  10. Any 2-by-2 format call sign having the letters KP, NP or WP as the prefix and the numeral 0, 6, 7, 8 or 9;
  11. Any 2-by-1 format call sign having the letters KP, NP or WP as the prefix and the numeral 0, 6, 7, 8 or 9;
  12. Call signs having the single letter prefix (K, N or W), a single digit numeral 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and a single letter suffix are reserved for the special event call sign system.
Call SignRule Violation
 A0DAWCall does not fall within a valid group as per FCC Guidelines
 A0YO Call does not fall within a valid group as per FCC Guidelines
 A1DAWCall does not fall within a valid group as per FCC Guidelines
 A4DAWCall does not fall within a valid group as per FCC Guidelines
 A4KB Call does not fall within a valid group as per FCC Guidelines
 A6LI Call does not fall within a valid group as per FCC Guidelines
 A6LL Call does not fall within a valid group as per FCC Guidelines
 A6YL Call does not fall within a valid group as per FCC Guidelines
 A8DAWCall does not fall within a valid group as per FCC Guidelines
 A8RL Call does not fall within a valid group as per FCC Guidelines
ALIZCall sign is incorrectly formatted as per FCC Guidelines
K02QCall sign is incorrectly formatted as per FCC Guidelines
 K0QUI2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
KG3Call sign is incorrectly formatted as per FCC Guidelines
KO4XMD4.  Any 2-by-3 format call sign having the letter X as the first letter of the suffix
 M1KENCall does not fall within a valid group as per FCC Guidelines
NE0WLS7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NP7B  11.  Any 2-by-1 format call sign having the letters KP, NP or WP as the prefix and the numeral 0, 6, 7, 8 or 9
 S4JR Call does not fall within a valid group as per FCC Guidelines
 S4RJ Call does not fall within a valid group as per FCC Guidelines
TX27RSOCall sign is incorrectly formatted as per FCC Guidelines
TX35CSOCall sign is incorrectly formatted as per FCC Guidelines
TX53CSOCall sign is incorrectly formatted as per FCC Guidelines
TX86RSOCall sign is incorrectly formatted as per FCC Guidelines
WC9WTF8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WK9ZFG8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WP7B  11.  Any 2-by-1 format call sign having the letters KP, NP or WP as the prefix and the numeral 0, 6, 7, 8 or 9
WV03TTCall sign is incorrectly formatted as per FCC Guidelines
WV4057Call sign is incorrectly formatted as per FCC Guidelines
WV406ACall sign is incorrectly formatted as per FCC Guidelines
WV406TCall sign is incorrectly formatted as per FCC Guidelines
WV406ZCall sign is incorrectly formatted as per FCC Guidelines