K4SUP
Active1x3District 4
Competitive callsign — 3 applications filed with the FCC.
License HolderChappell, Thomas M
License ClassGeneral
Min. Class RequiredGeneral
LocationCollege Station, TX
Grant DateDec 12, 2025
Expiration DateDec 12, 2035
K4SUP is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Chappell, Thomas M in College Station, TX. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Chappell, Thomas M on Nov 20, 2015. K4SUP has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- ... ..- .--.
CW Weight: 30 units(Light (fast to send))
Voice Phonetics
Kilo Four Sierra Uniform Papa
Readability: 7/10(Good readability)
License History
- License RenewedDec 12, 2025
- Administrative Update AppliedJun 13, 2018
- License IssuedDec 8, 2015
- Vanity Callsign GrantedDec 8, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.