Invalid Call Sign Requests

Last updated Friday, July 1, 2022 5:41:49 AM (Arizona)
Friday, July 1, 2022 12:41:49 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
4WOLFCall sign is incorrectly formatted as per FCC Guidelines
 A2DEXCall does not fall within a valid group as per FCC Guidelines
 A4DPKCall does not fall within a valid group as per FCC Guidelines
 A6GRHCall does not fall within a valid group as per FCC Guidelines
D4WOLFCall sign is incorrectly formatted as per FCC Guidelines
K4WOLFCall sign is incorrectly formatted as per FCC Guidelines
KEHGCall sign is incorrectly formatted as per FCC Guidelines
KM4RM2Call sign is incorrectly formatted as per FCC Guidelines
KP6SAR9.  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
N4AVTRCall sign is incorrectly formatted as per FCC Guidelines
NZ8SCZ7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
P4WOLFCall sign is incorrectly formatted as per FCC Guidelines
PB1488Call sign is incorrectly formatted as per FCC Guidelines
SM0SAMCall does not fall within a valid group as per FCC Guidelines
 W3T  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.
WBRGCall sign is incorrectly formatted as per FCC Guidelines
WCRGCall sign is incorrectly formatted as per FCC Guidelines
WDRGCall sign is incorrectly formatted as per FCC Guidelines
WERGCall sign is incorrectly formatted as per FCC Guidelines
WFRGCall sign is incorrectly formatted as per FCC Guidelines
WGNWCall sign is incorrectly formatted as per FCC Guidelines
WOL4FCall sign is incorrectly formatted as per FCC Guidelines
WOLF4Call sign is incorrectly formatted as per FCC Guidelines
WOLF4PCall sign is incorrectly formatted as per FCC Guidelines
WWRGCall sign is incorrectly formatted as per FCC Guidelines