Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4WBC callsign genealogy
Currently held by Sleeman Sr, Joseph J
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 K4WBC's current licensee, walking backwards.
- Sleeman Sr, Joseph JFLgranted 2016-08-31cancelled 2016-09-20
Successor callsigns
Callsigns held now by people who previously held K4WBC.
No current licensee on record previously held this callsign.