Invalid Call Sign Requests

Last updated Saturday, April 20, 2024 6:19:04 AM (Arizona)
Saturday, April 20, 2024 1:19:04 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
5URFCall sign is incorrectly formatted as per FCC Guidelines
 A0DTMCall does not fall within a valid group as per FCC Guidelines
 A3ACKCall does not fall within a valid group as per FCC Guidelines
 A4ET Call does not fall within a valid group as per FCC Guidelines
 A5CT Call does not fall within a valid group as per FCC Guidelines
 A5EE Call does not fall within a valid group as per FCC Guidelines
 A5TROCall does not fall within a valid group as per FCC Guidelines
AM0N  3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
AM1SIL3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
ASTR0Call sign is incorrectly formatted as per FCC Guidelines
AT7ZFS3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
AY0YO 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
AZ4YO 3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
 C1APPCall does not fall within a valid group as per FCC Guidelines
 D1SILCall does not fall within a valid group as per FCC Guidelines
 D9APPCall does not fall within a valid group as per FCC Guidelines
E419Call sign is incorrectly formatted as per FCC Guidelines
EV9VLBCall does not fall within a valid group as per FCC Guidelines
FD1HPDCall does not fall within a valid group as per FCC Guidelines
FD2HPDCall does not fall within a valid group as per FCC Guidelines
FD3HPDCall does not fall within a valid group as per FCC Guidelines
FD4HPDCall does not fall within a valid group as per FCC Guidelines
FD5HPDCall does not fall within a valid group as per FCC Guidelines
FD6HPDCall does not fall within a valid group as per FCC Guidelines
FD7HPDCall does not fall within a valid group as per FCC Guidelines
GO4HAMCall does not fall within a valid group as per FCC Guidelines
IM1PACCall does not fall within a valid group as per FCC Guidelines
IM4HAMCall does not fall within a valid group as per FCC Guidelines
IMPACCall sign is incorrectly formatted as per FCC Guidelines
IS4SILCall does not fall within a valid group as per FCC Guidelines
 J3ACKCall does not fall within a valid group as per FCC Guidelines
 J5AN Call does not fall within a valid group as per FCC Guidelines
JW1HHSCall does not fall within a valid group as per FCC Guidelines
JW1HSCCall does not fall within a valid group as per FCC Guidelines
JW2HHSCall does not fall within a valid group as per FCC Guidelines
JW2HSCCall does not fall within a valid group as per FCC Guidelines
JW3ACKCall does not fall within a valid group as per FCC Guidelines
JW3HHSCall does not fall within a valid group as per FCC Guidelines
JW3HSCCall does not fall within a valid group as per FCC Guidelines
JW4HHSCall does not fall within a valid group as per FCC Guidelines
JW4HSCCall does not fall within a valid group as per FCC Guidelines
JW5HHSCall does not fall within a valid group as per FCC Guidelines
JW5HSCCall does not fall within a valid group as per FCC Guidelines
JW6HHSCall does not fall within a valid group as per FCC Guidelines
JW6HSCCall does not fall within a valid group as per FCC Guidelines
JW7HHSCall does not fall within a valid group as per FCC Guidelines
JW7HSCCall does not fall within a valid group as per FCC Guidelines
JW8HHSCall does not fall within a valid group as per FCC Guidelines
JW8HSCCall does not fall within a valid group as per FCC Guidelines
JW9HHSCall does not fall within a valid group as per FCC Guidelines
JW9HSCCall does not fall within a valid group as per FCC Guidelines
K319KCall sign is incorrectly formatted as per FCC Guidelines
K3223Call sign is incorrectly formatted as per FCC Guidelines
K3556Call sign is incorrectly formatted as per FCC Guidelines
K5E419Call sign is incorrectly formatted as per FCC Guidelines
KC3223Call sign is incorrectly formatted as per FCC Guidelines
KC32ACall sign is incorrectly formatted as per FCC Guidelines
KC32A9Call sign is incorrectly formatted as per FCC Guidelines
KC3556Call sign is incorrectly formatted as per FCC Guidelines
KC39MMCall sign is incorrectly formatted as per FCC Guidelines
KCJ53Call sign is incorrectly formatted as per FCC Guidelines
KE419Call sign is incorrectly formatted as per FCC Guidelines
KFJOECall sign is incorrectly formatted as per FCC Guidelines
KFTSCall sign is incorrectly formatted as per FCC Guidelines
KG4EX 1.  KA2AA-KA9ZZ, KC4AAA-KC4AAF, KC4USA-KC4USZ, KG4AA-KG4ZZ, KC6AA-KC6ZZ, KL9KAA- KL9KHZ, KX6AA-KX6ZZ
KJE419Call sign is incorrectly formatted as per FCC Guidelines
KQ4MJSHCall sign is incorrectly formatted as per FCC Guidelines
KX6BO 1.  KA2AA-KA9ZZ, KC4AAA-KC4AAF, KC4USA-KC4USZ, KG4AA-KG4ZZ, KC6AA-KC6ZZ, KL9KAA- KL9KHZ, KX6AA-KX6ZZ
MASCOTCall sign is incorrectly formatted as per FCC Guidelines
ME4SILCall does not fall within a valid group as per FCC Guidelines
 R1CKSCall does not fall within a valid group as per FCC Guidelines
 R7SILCall does not fall within a valid group as per FCC Guidelines
RA1SILCall does not fall within a valid group as per FCC Guidelines
RG4HAMCall does not fall within a valid group as per FCC Guidelines
RG6HAMCall does not fall within a valid group as per FCC Guidelines
RL275Call sign is incorrectly formatted as per FCC Guidelines
RM2SILCall does not fall within a valid group as per FCC Guidelines
RM3SILCall does not fall within a valid group as per FCC Guidelines
RM4NAVCall does not fall within a valid group as per FCC Guidelines
SI1COXCall does not fall within a valid group as per FCC Guidelines
 T8AZ Call does not fall within a valid group as per FCC Guidelines
 T8AZZCall does not fall within a valid group as per FCC Guidelines
TA8ZZ Call does not fall within a valid group as per FCC Guidelines
TA8ZZECall does not fall within a valid group as per FCC Guidelines
TA8ZZVCall does not fall within a valid group as per FCC Guidelines
TA8ZZWCall does not fall within a valid group as per FCC Guidelines
TA8ZZYCall does not fall within a valid group as per FCC Guidelines
 W7QRP2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
W84ITCall sign is incorrectly formatted as per FCC Guidelines
WNC4GWICall sign is incorrectly formatted as per FCC Guidelines
WVJOECall sign is incorrectly formatted as per FCC Guidelines