Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WJ4PB callsign genealogy
Currently held by BACK, JONATHAN P
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 WJ4PB's current licensee, walking backwards.
- BACK, JONATHAN PKYgranted 2013-04-05cancelled 2016-02-23
Successor callsigns
Callsigns held now by people who previously held WJ4PB.
No current licensee on record previously held this callsign.