Invalid Call Sign Requests

Last updated Tuesday, September 26, 2023 6:00:45 AM (Arizona)
Tuesday, September 26, 2023 1:00:45 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
AZ4BZ 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
 B5STYCall does not fall within a valid group as per FCC Guidelines
BS5SBRCall does not fall within a valid group as per FCC Guidelines
G1NG3RCall sign is incorrectly formatted as per FCC Guidelines
G1NGERCall sign is incorrectly formatted as per FCC Guidelines
GING3RCall sign is incorrectly formatted as per FCC Guidelines
 J4LAYCall does not fall within a valid group as per FCC Guidelines
JA7ON Call does not fall within a valid group as per FCC Guidelines
OB1N  Call does not fall within a valid group as per FCC Guidelines
RB4MM Call does not fall within a valid group as per FCC Guidelines
RE4NE Call does not fall within a valid group as per FCC Guidelines
RN4MBACall does not fall within a valid group as per FCC Guidelines
SL1DERCall does not fall within a valid group as per FCC Guidelines
SL1DRRCall does not fall within a valid group as per FCC Guidelines
 T4JAYCall does not fall within a valid group as per FCC Guidelines
 T4JLKCall does not fall within a valid group as per FCC Guidelines
WASUPCall sign is incorrectly formatted as per FCC Guidelines
WT5JSC8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WT7JSC8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WT9JSC8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)