K4THR
Active1x3District 4
Competitive callsign — 6 applications filed with the FCC.
License HolderKather, Mark H
License ClassGeneral
Min. Class RequiredGeneral
LocationMadison, AL
Grant DateJun 11, 2022
Expiration DateJun 11, 2032
K4THR is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Kather, Mark H in Madison, AL. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by Kather, Mark H on May 24, 2022. K4THR has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- - .... .-.
CW Weight: 26 units(Light (fast to send))
Voice Phonetics
Kilo Four Tango Hotel Romeo
Readability: 7.5/10(High readability)
License History
- License ModifiedMar 14, 2025
- License IssuedJun 11, 2022
- Vanity Callsign GrantedJun 11, 2022
Vanity Application Activity
Competing applications filed with the FCC for this callsign.