KA5OSF
Active2x3District 5
Competitive callsign — 1 application filed with the FCC.
License HolderMackus, Michael J
License ClassTechnician
Min. Class RequiredTechnician
LocationWeatherford, TX
Grant DateMay 23, 2026
Expiration DateMay 23, 2036
KA5OSF is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Mackus, Michael J in Weatherford, TX. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Mackus, Michael J on May 5, 2026. KA5OSF has 2 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .- ..... --- ... ..-.
CW Weight: 34 units(Moderate)
Voice Phonetics
Kilo Alpha Five Oscar Sierra Foxtrot
Readability: 7/10(Good readability)
License History
- License IssuedMay 23, 2026
- Vanity Callsign GrantedMay 23, 2026
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Mackus, Michael JFiled May 5, 2026Not awardedFCC ↗