Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9YM callsign genealogy
Currently held by ROBERTSON, BRIAN 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 AB9YM's current licensee, walking backwards.
- ROBERTSON, BRIAN RILgranted 2003-05-06cancelled 2011-02-01
Successor callsigns
Callsigns held now by people who previously held AB9YM.
- Robertson, Brian RMOgranted 2022-12-02