KF0RSR
Cancelled2x3District 0
Competitive callsign — 1 application filed with the FCC.
License HolderClausen, Jonah P
License ClassTechnician
Min. Class RequiredTechnician
LocationSouth Saint Paul, MN
Grant DateSep 21, 2024
Cancellation DateOct 11, 2024
Available for ApplicationsOct 12, 2026
KF0RSR is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Clausen, Jonah P in South Saint Paul, MN. 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 Randolph, Ryan S on Jun 5, 2025. KF0RSR has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ..-. ----- .-. ... .-.
CW Weight: 41 units(Heavy (slower to send))
Voice Phonetics
Kilo Foxtrot Zero Romeo Sierra Romeo
Readability: 5.5/10(Moderate readability)
Available Oct 12, 2026 (94 days remaining)
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License CanceledOct 11, 2024
- System-Generated GrantSep 21, 2024
- License IssuedSep 21, 2024
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Randolph, Ryan SFiled Jun 5, 2025Not awardedFCC ↗