Invalid Callsign Requests

Last updated Sunday, April 11, 2021 4:34:22 PM (Arizona)
Sunday, April 11, 2021 11:34:22 PM (UTC)

Applications

Invalid Callsigns

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
 A0KATCall does not fall within a valid group as per FCC Guidelines
 A1KATCall does not fall within a valid group as per FCC Guidelines
 A4DC Call does not fall within a valid group as per FCC Guidelines
 A5AH Call does not fall within a valid group as per FCC Guidelines
 A5DC Call does not fall within a valid group as per FCC Guidelines
 A5KAZCall does not fall within a valid group as per FCC Guidelines
 A5OCFCall does not fall within a valid group as per FCC Guidelines
 A5RF Call does not fall within a valid group as per FCC Guidelines
 A5TX Call does not fall within a valid group as per FCC Guidelines
 A5ZIGCall does not fall within a valid group as per FCC Guidelines
 A7RW Call does not fall within a valid group as per FCC Guidelines
 A9DCICall does not fall within a valid group as per FCC Guidelines
 A9US Call does not fall within a valid group as per FCC Guidelines
 A9USACall does not fall within a valid group as per FCC Guidelines
AC9DCI6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AC9USA6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AN7DT 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
AR6OP 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
AS7DT 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
AT7DT 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
DK1ABACall does not fall within a valid group as per FCC Guidelines
DK1ABCCall does not fall within a valid group as per FCC Guidelines
DK1ACBCall does not fall within a valid group as per FCC Guidelines
DK1CBACall does not fall within a valid group as per FCC Guidelines
DK2ABCCall does not fall within a valid group as per FCC Guidelines
DK2ACBCall does not fall within a valid group as per FCC Guidelines
DK2XYZ4.  Any 2-by-3 format call sign having the letter X as the first letter of the suffix
DK3ABCCall does not fall within a valid group as per FCC Guidelines
IP6SUSCall does not fall within a valid group as per FCC Guidelines
JK7KEMCall does not fall within a valid group as per FCC Guidelines
JK7TUCCall does not fall within a valid group as per FCC Guidelines
JL7TUCCall does not fall within a valid group as per FCC Guidelines
K04PENCall sign is incorrectly formatted as per FCC Guidelines
K55PDGCall sign is incorrectly formatted as per FCC Guidelines
K5FETTCall sign is incorrectly formatted as per FCC Guidelines
K61F0OTCall sign is incorrectly formatted as per FCC Guidelines
K61FOOTCall sign is incorrectly formatted as per FCC Guidelines
K6BATMNCall sign is incorrectly formatted as per FCC Guidelines
K6CL0NECall sign is incorrectly formatted as per FCC Guidelines
K6CLONECall sign is incorrectly formatted as per FCC Guidelines
K6H0MECall sign is incorrectly formatted as per FCC Guidelines
K6JS0NCall sign is incorrectly formatted as per FCC Guidelines
K6TREBCall sign is incorrectly formatted as per FCC Guidelines
K6TUC0Call sign is incorrectly formatted as per FCC Guidelines
K6VACACall sign is incorrectly formatted as per FCC Guidelines
K9P3Call sign is incorrectly formatted as per FCC Guidelines
 K9QRB2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
KD2XPG4.  Any 2-by-3 format call sign having the letter X as the first letter of the suffix
KD2XYZ4.  Any 2-by-3 format call sign having the letter X as the first letter of the suffix
KG4ML 1.  KA2AA-KA9ZZ, KC4AAA-KC4AAF, KC4USA-KC4USZ, KG4AA-KG4ZZ, KC6AA-KC6ZZ, KL9KAA- KL9KHZ, KX6AA-KX6ZZ
KI5FETTCall sign is incorrectly formatted as per FCC Guidelines
KN86BACall sign is incorrectly formatted as per FCC Guidelines
KX6YQ 1.  KA2AA-KA9ZZ, KC4AAA-KC4AAF, KC4USA-KC4USZ, KG4AA-KG4ZZ, KC6AA-KC6ZZ, KL9KAA- KL9KHZ, KX6AA-KX6ZZ
N5FETTCall sign is incorrectly formatted as per FCC Guidelines
NA4CAC7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NA4KAT7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NA4MLC7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NA4MMC7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NA4PEN7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NA4TRA7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NA4TRC7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NA4TTC7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NC4BSA7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NG1RAY7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NG1RSN7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NG1SEN7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NL1ZZY7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
NU81Call sign is incorrectly formatted as per FCC Guidelines
TW0TW Call does not fall within a valid group as per FCC Guidelines
TW0WT Call does not fall within a valid group as per FCC Guidelines
W2CZ7Call sign is incorrectly formatted as per FCC Guidelines
 W4QRB2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
W5FETTCall sign is incorrectly formatted as per FCC Guidelines
W67CVCall sign is incorrectly formatted as per FCC Guidelines
WC8RAF8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WK5CJL8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WK7ALF8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WK7ZXT8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WM2CZ7Call sign is incorrectly formatted as per FCC Guidelines
WM2SIG8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WM2WIN8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WMCWCall sign is incorrectly formatted as per FCC Guidelines
WT7ALF8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)