K4DEF
Active1x3District 4
Competitive callsign — 7 applications filed with the FCC.
License HolderDeFoore, Matthew C
License ClassTechnician
Min. Class RequiredGeneral
LocationPembroke, NH
Grant DateJun 2, 2026
Expiration DateJun 2, 2036
K4DEF is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by DeFoore, Matthew C in Pembroke, NH. This callsign has attracted significant interest in the amateur radio community, with 7 vanity applications filed with the FCC. The most recent was submitted by DeFoore, Matthew C on May 13, 2026. K4DEF has 10 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- -.. . ..-.
CW Weight: 26 units(Light (fast to send))
Voice Phonetics
Kilo Four Delta Echo Foxtrot
Readability: 8/10(High readability)
License History
- Vanity Callsign GrantedJun 2, 2026
- License IssuedJun 2, 2026
- License CanceledDec 16, 2022
- Administrative Update AppliedNov 29, 2022
- Administrative Update AppliedAug 11, 2022
- Vanity Callsign GrantedJan 21, 2022
- License IssuedJan 21, 2022
- License ExpiredMar 6, 2021
- License RenewedDec 9, 2008
- Administrative Update AppliedJun 22, 2005
Vanity Application Activity
Competing applications filed with the FCC for this callsign.