Invalid Call Sign Requests

Last updated Thursday, September 29, 2022 5:32:37 AM (Arizona)
Thursday, September 29, 2022 12:32:37 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
6Call sign is incorrectly formatted as per FCC Guidelines
 A6DOGCall does not fall within a valid group as per FCC Guidelines
 A7DOGCall does not fall within a valid group as per FCC Guidelines
 A7YL Call does not fall within a valid group as per FCC Guidelines
AZ5W  3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
DK6CJTCall does not fall within a valid group as per FCC Guidelines
DK6CTJCall does not fall within a valid group as per FCC Guidelines
DK6JCTCall does not fall within a valid group as per FCC Guidelines
DK6JTCCall does not fall within a valid group as per FCC Guidelines
DK6TJCCall does not fall within a valid group as per FCC Guidelines
KCall sign is incorrectly formatted as per FCC Guidelines
K05GCall sign is incorrectly formatted as per FCC Guidelines
K0H4FCall sign is incorrectly formatted as per FCC Guidelines
K4CJJWCall sign is incorrectly formatted as per FCC Guidelines
 K4QUE2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
KC6AC 1.  KA2AA-KA9ZZ, KC4AAA-KC4AAF, KC4USA-KC4USZ, KG4AA-KG4ZZ, KC6AA-KC6ZZ, KL9KAA- KL9KHZ, KX6AA-KX6ZZ
KC6AT 1.  KA2AA-KA9ZZ, KC4AAA-KC4AAF, KC4USA-KC4USZ, KG4AA-KG4ZZ, KC6AA-KC6ZZ, KL9KAA- KL9KHZ, KX6AA-KX6ZZ
KN6XLR4.  Any 2-by-3 format call sign having the letter X as the first letter of the suffix
KS0117Call sign is incorrectly formatted as per FCC Guidelines
KW5QUZ2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
MCall sign is incorrectly formatted as per FCC Guidelines
 N0QTR2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
 N4QUE2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
PTEROCall sign is incorrectly formatted as per FCC Guidelines
SK1WI Call does not fall within a valid group as per FCC Guidelines
SK1WIPCall does not fall within a valid group as per FCC Guidelines
SK1WISCall does not fall within a valid group as per FCC Guidelines
SKIW1Call sign is incorrectly formatted as per FCC Guidelines
SPK1WICall sign is incorrectly formatted as per FCC Guidelines
TCall sign is incorrectly formatted as per FCC Guidelines
WCall sign is incorrectly formatted as per FCC Guidelines
 W4QUE2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
WEQICall sign is incorrectly formatted as per FCC Guidelines
WF10Call sign is incorrectly formatted as per FCC Guidelines
WK2LJF8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
XX7UMFCall does not fall within a valid group as per FCC Guidelines