K1SBO
Active1x3District 1
Competitive callsign — 1 application filed with the FCC.
License HolderTRUMBULL, CALVIN F
License ClassTechnician
Min. Class RequiredGeneral
LocationBOLTON, CT
Grant DateSep 15, 2016
Expiration DateSep 15, 2026
K1SBO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by TRUMBULL, CALVIN F in BOLTON, CT. 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 Osmon, Stephen B on Feb 23, 2010. K1SBO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .---- ... -... ---
CW Weight: 38 units(Moderate)
Voice Phonetics
Kilo One Sierra Bravo Oscar
Readability: 7.5/10(High readability)
License History
- License RenewedSep 15, 2016
- FRN Association Email SentJun 9, 2006
- License RenewedJun 9, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Osmon, Stephen BFiled Feb 23, 2010Not awardedFCC ↗