Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JDP callsign genealogy
Currently held by RISBAN, LAWRENCE 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 W4JDP's current licensee, walking backwards.
- Peterson, John DALgranted 2007-03-20cancelled 2010-05-08
Successor callsigns
Callsigns held now by people who previously held W4JDP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4JDP, oldest first.
- RISBAN, LAWRENCE M FL1995-01-18 → cancelled 2007-01-19
- Peterson, John D AL2020-04-28 active