Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4JDF callsign genealogy
Currently held by Wimmers Jr, Bernard C
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 N4JDF's current licensee, walking backwards.
- Fields, John DNCgranted 2012-06-12cancelled 2013-03-26
Successor callsigns
Callsigns held now by people who previously held N4JDF.
- Wimmers Jr, Bernard CMDgranted 2020-05-16
All historical holders
Every license row we've seen with the callsign N4JDF, oldest first.
- Wimmers Jr, Bernard C VA2007-12-12 → cancelled 2010-06-25
- Fields, John D NC2023-02-09 active