K4SJR
Active1x3District 4
Competitive callsign — 3 applications filed with the FCC.
License HolderMANWILL, CONSTANCE D
License ClassTechnician
Min. Class RequiredGeneral
LocationPleasant Grove, UT
Grant DateMar 21, 2023
Expiration DateMar 21, 2033
K4SJR is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by MANWILL, CONSTANCE D in Pleasant Grove, UT. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Rau, Stephen J on Mar 28, 2025. K4SJR has 7 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- ... .--- .-.
CW Weight: 32 units(Moderate)
Voice Phonetics
Kilo Four Sierra Juliet Romeo
Readability: 6.5/10(Good readability)
License History
- License RenewedMar 21, 2023
- Administrative Update AppliedApr 23, 2016
- License RenewedJan 24, 2013
- Administrative Update AppliedJan 23, 2013
- License ModifiedAug 21, 2008
- License IssuedFeb 8, 2003
- Vanity Callsign GrantedFeb 8, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.