Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB8XX callsign genealogy
Currently held by Christman, Ryan 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 AB8XX's current licensee, walking backwards.
- Christman, Ryan LOHgranted 2003-04-15cancelled 2006-08-12
Successor callsigns
Callsigns held now by people who previously held AB8XX.
- Christman, Ryan LOHgranted 2025-06-21