Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9LK callsign genealogy
Currently held by Onsager, Bruce C
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 AB9LK's current licensee, walking backwards.
- Onsager, Bruce CILgranted 1996-01-12cancelled 2005-10-27
Successor callsigns
Callsigns held now by people who previously held AB9LK.
No current licensee on record previously held this callsign.