Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AL7U callsign genealogy
Currently held by Rosenberger, Andrew 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 AL7U's current licensee, walking backwards.
- Rosenberger, Andrew JAKgranted 2006-12-12cancelled 2015-06-27
Successor callsigns
Callsigns held now by people who previously held AL7U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AL7U, oldest first.
- OSTBO, IVAR AK1995-01-12 → cancelled 2007-01-13
- Rosenberger, Andrew J AK2025-06-21 active