Invalid Callsign Requests

Last updated Friday, August 7, 2020 6:19:50 AM (Arizona)
Friday, August 7, 2020 1:19:50 PM (UTC)

Applications

Invalid Callsigns

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
 A4WY Call does not fall within a valid group as per FCC Guidelines
AL0ALZ6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AL5ALZ6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
K17TAJCall sign is incorrectly formatted as per FCC Guidelines
K17TAJICall sign is incorrectly formatted as per FCC Guidelines
KJOLTSCall sign is incorrectly formatted as per FCC Guidelines
KJOLTZCall sign is incorrectly formatted as per FCC Guidelines
KK5.DNCall sign is incorrectly formatted as per FCC Guidelines
KN3XUS4.  Any 2-by-3 format call sign having the letter X as the first letter of the suffix
NC4NIL7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NONJCall sign is incorrectly formatted as per FCC Guidelines
UT1SLCCall does not fall within a valid group as per FCC Guidelines
W17TAJCall sign is incorrectly formatted as per FCC Guidelines
WK6JTB8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WM6JTB8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WT6RMB8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WTAJ17Call sign is incorrectly formatted as per FCC Guidelines
WTAJ336Call sign is incorrectly formatted as per FCC Guidelines
 X2RC Call does not fall within a valid group as per FCC Guidelines