Invalid Call Sign Requests

Last updated Tuesday, March 28, 2023 5:40:13 AM (Arizona)
Tuesday, March 28, 2023 12:40:13 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
 A0JZ Call does not fall within a valid group as per FCC Guidelines
 A1CAPCall does not fall within a valid group as per FCC Guidelines
 A1JZ Call does not fall within a valid group as per FCC Guidelines
 A9JZ Call does not fall within a valid group as per FCC Guidelines
AA7MDG6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AK7MDG6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AT0MK 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
 C5BTCCall does not fall within a valid group as per FCC Guidelines
 D5BTCCall does not fall within a valid group as per FCC Guidelines
 E8USACall does not fall within a valid group as per FCC Guidelines
GR8FTHCall does not fall within a valid group as per FCC Guidelines
 H5BTCCall does not fall within a valid group as per FCC Guidelines
 J5BTCCall does not fall within a valid group as per FCC Guidelines
NO3NEX7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NO3SCR7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NO3USN7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
 R5BTCCall does not fall within a valid group as per FCC Guidelines
 U5BTCCall does not fall within a valid group as per FCC Guidelines
WC0JON8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WK6MDG8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WK7MDG8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WR6MDG8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WR7MDG8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
 Z5BTCCall does not fall within a valid group as per FCC Guidelines