Invalid Call Sign Requests

Last updated Monday, September 27, 2021 5:58:54 AM (Arizona)
Monday, September 27, 2021 12:58:54 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
 A0EL Call does not fall within a valid group as per FCC Guidelines
 A0OG Call does not fall within a valid group as per FCC Guidelines
 A3AGWCall does not fall within a valid group as per FCC Guidelines
 A3WALCall does not fall within a valid group as per FCC Guidelines
 A4ALXCall does not fall within a valid group as per FCC Guidelines
 A7GRSCall does not fall within a valid group as per FCC Guidelines
AP3DSN3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
 H2OB Call does not fall within a valid group as per FCC Guidelines
 H2PL Call does not fall within a valid group as per FCC Guidelines
K04LABCall sign is incorrectly formatted as per FCC Guidelines
K2OBI1Call sign is incorrectly formatted as per FCC Guidelines
KE1TH1Call sign is incorrectly formatted as per FCC Guidelines
KJASNCall sign is incorrectly formatted as per FCC Guidelines
KJDHWXCall sign is incorrectly formatted as per FCC Guidelines
KNVV1Call sign is incorrectly formatted as per FCC Guidelines
KNVV6Call sign is incorrectly formatted as per FCC Guidelines
KWXJDHCall sign is incorrectly formatted as per FCC Guidelines
KZDAHCall sign is incorrectly formatted as per FCC Guidelines
NK6BRR7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NP4JAR7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NP4JRA7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NP4RAJ7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NP4RJA7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
W1WCWMCall sign is incorrectly formatted as per FCC Guidelines
WK6BRR8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WK7RRT8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WZDAHCall sign is incorrectly formatted as per FCC Guidelines