Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WJ4P callsign genealogy
Currently held by Kerber, Timothy A
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 WJ4P's current licensee, walking backwards.
- Kerber, Timothy AALgranted 2004-06-29cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held WJ4P.
- HARGENRADER, JAMES RSCgranted 2003-11-01cancelled 2004-07-30
All historical holders
Every license row we've seen with the callsign WJ4P, oldest first.
- HARGENRADER, JAMES R SC2003-01-08 → cancelled 2003-11-01
- Kerber, Timothy A AL2026-01-07 active