Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9RJM callsign genealogy
Currently held by MATTASITS, ROBERT 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 W9RJM's current licensee, walking backwards.
- MATTASITS, ROBERT JINgranted 1998-04-08cancelled 2000-02-11
Successor callsigns
Callsigns held now by people who previously held W9RJM.
No current licensee on record previously held this callsign.