K4RSN
Active1x3District 4
Competitive callsign — 3 applications filed with the FCC.
License HolderDUSIO, JOSEPH M
License ClassAdvanced
Min. Class RequiredGeneral
LocationCEDAR RAPIDS, IA
Grant DateJul 31, 2024
Expiration DateJul 17, 2034
K4RSN is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by DUSIO, JOSEPH M in CEDAR RAPIDS, IA. 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 Rosenberger, Robin J on Jan 2, 2026. K4RSN has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .-. ... -.
CW Weight: 26 units(Light (fast to send))
Voice Phonetics
Kilo Four Romeo Sierra November
Readability: 6.5/10(Good readability)
License History
- License RenewedJul 31, 2024
- License RenewedMay 23, 2014
- Administrative Update AppliedJul 29, 2008
- Administrative Update AppliedMar 23, 2007
- Administrative Update AppliedApr 15, 2005
- License ModifiedAug 3, 2004
- License IssuedJul 17, 2004
- Vanity Callsign GrantedJul 17, 2004
Vanity Application Activity
Competing applications filed with the FCC for this callsign.