Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0FDM callsign genealogy
Currently held by Ludwig, Joshua D
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 W0FDM's current licensee, walking backwards.
- Ludwig, Joshua DMOgranted 2021-06-02cancelled 2025-02-28
Successor callsigns
Callsigns held now by people who previously held W0FDM.
No current licensee on record previously held this callsign.