Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4JJM callsign genealogy
Currently held by Madigan Jr., James 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 WA4JJM's current licensee, walking backwards.
- MADIGAN JR, JAMES JVAgranted 2003-04-10cancelled 2009-10-27
Successor callsigns
Callsigns held now by people who previously held WA4JJM.
No current licensee on record previously held this callsign.