K4MM
Active1x2District 4
Competitive callsign — 36 applications filed with the FCC.
License HolderCOLYARD JR, THOMAS M
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationPORT SAINT LUCIE, FL
Grant DateDec 8, 2022
Expiration DateDec 8, 2032
K4MM is a highly sought-after 1x2 format amateur radio callsign. The license is currently held by COLYARD JR, THOMAS M in PORT SAINT LUCIE, FL. This callsign has attracted significant interest in the amateur radio community, with 36 vanity applications filed with the FCC. The most recent was submitted by Sherrill, Jim on Aug 24, 2026. K4MM has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -- --
CW Weight: 26 units(Light (fast to send))
Voice Phonetics
Kilo Four Mike Mike
Readability: 9.5/10(Excellent readability)
License History
- License RenewedDec 8, 2022
- License RenewedJun 13, 2012
- Tax ID (TIN) AddedJun 11, 2012
- FRN Association Email SentJan 22, 2010
- FRN Disassociation Email SentJan 22, 2010
- Vanity Callsign GrantedAug 20, 2002
- License IssuedAug 20, 2002
- Internal Correction AppliedJul 31, 2002
- Internal Correction AppliedJul 31, 2002
Vanity Application Activity
Competing applications filed with the FCC for this callsign.