Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4WCJ callsign genealogy
Currently held by Moon, Stephen M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KF4WCJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KF4WCJ.
- Moon, Stephen MALgranted 2009-08-11cancelled 2017-11-04
All historical holders
Every license row we've seen with the callsign KF4WCJ, oldest first.
- Moon, Stephen M GA2007-12-21 → cancelled 2009-08-11
- Moon, Stephen M AL2017-11-04 active