K0STF
Active1x3District 0
Competitive callsign — 2 applications filed with the FCC.
License HolderPeterson, Steffanie
License ClassGeneral
Min. Class RequiredGeneral
LocationLakewood, CO
Grant DateMar 24, 2017
Expiration DateMar 24, 2027
K0STF is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Peterson, Steffanie in Lakewood, CO. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Peterson, Steffanie on Mar 6, 2017. K0STF has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ----- ... - ..-.
CW Weight: 34 units(Moderate)
Voice Phonetics
Kilo Zero Sierra Tango Foxtrot
Readability: 7/10(Good readability)
License History
- Administrative Update AppliedDec 11, 2025
- License IssuedMar 24, 2017
- Vanity Callsign GrantedMar 24, 2017
- License ExpiredFeb 22, 2017
- License RenewedDec 28, 2004
- Tax ID (TIN) AddedDec 28, 2004
Vanity Application Activity
Competing applications filed with the FCC for this callsign.