Invalid Callsign Requests

Last updated Saturday, April 4, 2020 2:37:00 AM (Arizona)
Saturday, April 4, 2020 9:37:00 AM (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
 A1MB Call does not fall within a valid group as per FCC Guidelines
 A1MC Call does not fall within a valid group as per FCC Guidelines
 A1MX Call does not fall within a valid group as per FCC Guidelines
 A1VT Call does not fall within a valid group as per FCC Guidelines
 E4OK Call does not fall within a valid group as per FCC Guidelines
INITIALSCall sign is incorrectly formatted as per FCC Guidelines
K0NSDQCall sign is incorrectly formatted as per FCC Guidelines
K7NSDQCall sign is incorrectly formatted as per FCC Guidelines
KATLXCall sign is incorrectly formatted as per FCC Guidelines
KMHPCall sign is incorrectly formatted as per FCC Guidelines
KNANMLCall sign is incorrectly formatted as per FCC Guidelines
KP6ESF9.  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
MYCall sign is incorrectly formatted as per FCC Guidelines
NT2LLG7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NT4USA7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
OO5ONECall does not fall within a valid group as per FCC Guidelines
PLEASE?Call sign is incorrectly formatted as per FCC Guidelines
VU1TRECall does not fall within a valid group as per FCC Guidelines
VU1TURCall does not fall within a valid group as per FCC Guidelines
W7BYUQCall sign is incorrectly formatted as per FCC Guidelines
WC3ILO8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WC3VSA8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WJOUCall sign is incorrectly formatted as per FCC Guidelines
WMHPCall sign is incorrectly formatted as per FCC Guidelines
WT4USA8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)