Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4BC callsign genealogy
Currently held by HAMM SR, MICHAEL L
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 AJ4BC's current licensee, walking backwards.
- HAMM, MICHAEL LKYgranted 2007-03-26cancelled 2007-08-01
Successor callsigns
Callsigns held now by people who previously held AJ4BC.
No current licensee on record previously held this callsign.