Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9RM callsign genealogy
Currently held by MULLEN, WILLIAM R
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 AB9RM's current licensee, walking backwards.
- Mullen, William RILgranted 2002-03-14cancelled 2008-06-20
Successor callsigns
Callsigns held now by people who previously held AB9RM.
No current licensee on record previously held this callsign.