Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB9SI callsign genealogy
Currently held by Rowland, John M
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 AB9SI's current licensee, walking backwards.
- Rowland, John MILgranted 2007-11-16cancelled 2008-09-18
Successor callsigns
Callsigns held now by people who previously held AB9SI.
No current licensee on record previously held this callsign.