N4JSW
Active1x3District 4
Competitive callsign — 5 applications filed with the FCC.
License HolderWalworth, Jeremy S
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationLouisville, KY
Grant DateMay 25, 2023
Expiration DateJun 1, 2033
N4JSW is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Walworth, Jeremy S in Louisville, KY. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Williams, John S on Jun 30, 2009. N4JSW has 13 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. ....- .--- ... .--
CW Weight: 31 units(Moderate)
Voice Phonetics
November Four Juliet Sierra Whiskey
Readability: 6.5/10(Good readability)
License History
- License ModifiedFeb 17, 2026
- Administrative Update AppliedJan 30, 2026
- License RenewedMay 25, 2023
- Administrative Update AppliedSep 17, 2022
- Administrative Update AppliedOct 10, 2019
- License RenewedJun 1, 2013
- Administrative Update AppliedApr 13, 2010
- Administrative Update AppliedJun 27, 2007
- License ModifiedMar 30, 2004
- Administrative Update AppliedMar 12, 2004
- Administrative Update AppliedSep 26, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.