Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4OJL callsign genealogy
Currently held by SHOWALTER, SAMUEL 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 WB4OJL's current licensee, walking backwards.
- KN4FKcancelledcancelled 1997-08-05
Successor callsigns
Callsigns held now by people who previously held WB4OJL.
No current licensee on record previously held this callsign.