Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9FL callsign genealogy
Currently held by Rosenberg, John 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 AB9FL's current licensee, walking backwards.
- Rosenberg, John RILgranted 1999-03-25cancelled 2002-05-13
Successor callsigns
Callsigns held now by people who previously held AB9FL.
- Rosenberg, John RILgranted 2020-05-22