Invalid Callsign Requests

Last updated Thursday, January 21, 2021 9:15:33 AM (Arizona)
Thursday, January 21, 2021 4:15:33 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
 A8EM Call does not fall within a valid group as per FCC Guidelines
 A8GM Call does not fall within a valid group as per FCC Guidelines
 A8MG Call does not fall within a valid group as per FCC Guidelines
 A8MJ Call does not fall within a valid group as per FCC Guidelines
 A8SW Call does not fall within a valid group as per FCC Guidelines
 A8WS Call does not fall within a valid group as per FCC Guidelines
AA8SAB6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AB8SAB6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AC6CAZ6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AK8SAB6.  Any 2-by-3 format call sign having the letters AA-AL as the prefix
AM8G  3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
AM8J  3.  Any call sign having the letters AM-AZ as the prefix (these prefixes are assigned to other countries by the ITU)
 B1TBYCall does not fall within a valid group as per FCC Guidelines
FIVECall sign is incorrectly formatted as per FCC Guidelines
JR5TTPCall does not fall within a valid group as per FCC Guidelines
JR5TTPOCall sign is incorrectly formatted as per FCC Guidelines
K1WILLCall sign is incorrectly formatted as per FCC Guidelines
K26JAMCall sign is incorrectly formatted as per FCC Guidelines
K26JMCall sign is incorrectly formatted as per FCC Guidelines
K2FIVECall sign is incorrectly formatted as per FCC Guidelines
K2WILLCall sign is incorrectly formatted as per FCC Guidelines
K3WILLCall sign is incorrectly formatted as per FCC Guidelines
K4WILLCall sign is incorrectly formatted as per FCC Guidelines
K58ZCall sign is incorrectly formatted as per FCC Guidelines
K5DDTXCall sign is incorrectly formatted as per FCC Guidelines
K5FIVECall sign is incorrectly formatted as per FCC Guidelines
K5STMXCall sign is incorrectly formatted as per FCC Guidelines
K5WILLCall sign is incorrectly formatted as per FCC Guidelines
K6RAYMCall sign is incorrectly formatted as per FCC Guidelines
K6RBJRCall sign is incorrectly formatted as per FCC Guidelines
K6RMJRCall sign is incorrectly formatted as per FCC Guidelines
K6WILLCall sign is incorrectly formatted as per FCC Guidelines
K73DBCall sign is incorrectly formatted as per FCC Guidelines
K7WILLCall sign is incorrectly formatted as per FCC Guidelines
K8WILLCall sign is incorrectly formatted as per FCC Guidelines
K9WILLCall sign is incorrectly formatted as per FCC Guidelines
KB13LFDCall sign is incorrectly formatted as per FCC Guidelines
KBLFD13Call sign is incorrectly formatted as per FCC Guidelines
KC11JZCall sign is incorrectly formatted as per FCC Guidelines
KCJ11ZCall sign is incorrectly formatted as per FCC Guidelines
KE8QRF2.  Any call sign having the letters SOS or QRA-QUZ as the suffix
KFIVECall sign is incorrectly formatted as per FCC Guidelines
KIFIVECall sign is incorrectly formatted as per FCC Guidelines
KIJRMCall sign is incorrectly formatted as per FCC Guidelines
KJRMCall sign is incorrectly formatted as per FCC Guidelines
KPR1MECall sign is incorrectly formatted as per FCC Guidelines
MO2TTPCall does not fall within a valid group as per FCC Guidelines
MO2TTPOCall sign is incorrectly formatted as per FCC Guidelines
MO5JSRCall does not fall within a valid group as per FCC Guidelines
MO9TTPCall does not fall within a valid group as per FCC Guidelines
MO9TTPOCall sign is incorrectly formatted as per FCC Guidelines
N06XCall sign is incorrectly formatted as per FCC Guidelines
N0BL3Call sign is incorrectly formatted as per FCC Guidelines
NW6VUO7.  Any 2-by-3 format call sign having the letters NA-NZ as the prefix
RA2DARCall does not fall within a valid group as per FCC Guidelines
W27DBCall sign is incorrectly formatted as per FCC Guidelines
W27DPCall sign is incorrectly formatted as per FCC Guidelines
W2FIVECall sign is incorrectly formatted as per FCC Guidelines
W4Call sign is incorrectly formatted as per FCC Guidelines
W5FIVECall sign is incorrectly formatted as per FCC Guidelines
W6RAYMCall sign is incorrectly formatted as per FCC Guidelines
W6RBJRCall sign is incorrectly formatted as per FCC Guidelines
W6RMJRCall sign is incorrectly formatted as per FCC Guidelines
W72DPCall sign is incorrectly formatted as per FCC Guidelines
W73DBCall sign is incorrectly formatted as per FCC Guidelines
W7DB2Call sign is incorrectly formatted as per FCC Guidelines
WANIMODCall sign is incorrectly formatted as per FCC Guidelines
WB13LFDCall sign is incorrectly formatted as per FCC Guidelines
WBANIMODCall sign is incorrectly formatted as per FCC Guidelines
WC8CPW8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WDOMINACall sign is incorrectly formatted as per FCC Guidelines
WFIVECall sign is incorrectly formatted as per FCC Guidelines
WGTXCall sign is incorrectly formatted as per FCC Guidelines
WIFIVECall sign is incorrectly formatted as per FCC Guidelines
WIJRMCall sign is incorrectly formatted as per FCC Guidelines
WJRMCall sign is incorrectly formatted as per FCC Guidelines
WLFD13Call sign is incorrectly formatted as per FCC Guidelines
WMATA1Call sign is incorrectly formatted as per FCC Guidelines
WMATALGCall sign is incorrectly formatted as per FCC Guidelines
WP7Z  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
WPAMRACall sign is incorrectly formatted as per FCC Guidelines
WT8CPW8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)
WT8RRP8.  Any 2-by-3 format call sign having the letters WC, WK, WM, WR, or WT as the prefix (Group X call signs)