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K4MAT

Active1x3District 4

Competitive callsign — 4 applications filed with the FCC.

License HolderRANKIN, JAMES E

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationConcord, CA

Grant DateMar 24, 2026

Expiration DateJun 18, 2036

K4MAT is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by RANKIN, JAMES E in Concord, CA. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Williamson, Matthew T on Jul 13, 2026. K4MAT has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

-.- ....- -- .- -

CW Weight: 27 units(Light (fast to send))

Voice Phonetics

Kilo Four Mike Alpha Tango

Readability: 8.5/10(High readability)

License History

License RenewedMar 24, 2026
License RenewedApr 7, 2016
Administrative Update AppliedOct 8, 2009
License RenewedMar 25, 2006
License ModifiedJan 23, 2002
License ModifiedMay 5, 2000

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Williamson, Matthew TFiled Jul 13, 2026
Not awardedFCC ↗
AGNESE Sr., MATTHEW DFiled Aug 19, 2004
DismissedFCC ↗
Borkowski, Matt JFiled Jan 20, 2000
Not awardedFCC ↗
MC KNIGHT, JOHN DFiled Jan 20, 2000

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K4MAS K4MAU →

FCC data as of Sep 3, 2026

Not awarded

K4MAT FCC Vanity Status: 4 Competing Applications & History