Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3WJM callsign genealogy
Currently held by Madden, William J
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 KC3WJM's current licensee, walking backwards.
- Madden, William JPAgranted 2021-02-23cancelled 2021-03-23
Successor callsigns
Callsigns held now by people who previously held KC3WJM.
- Madden, William JPAgranted 2023-07-28