Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4GP callsign genealogy
Currently held by HAAS, MICHAEL 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 AJ4GP's current licensee, walking backwards.
- HAAS, MICHAEL MGAgranted 2008-03-20cancelled 2008-03-27
Successor callsigns
Callsigns held now by people who previously held AJ4GP.
No current licensee on record previously held this callsign.