Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB8TT callsign genealogy
Currently held by Stumpf, John 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 AB8TT's current licensee, walking backwards.
- Stumpf, John MOHgranted 2001-10-26cancelled 2002-04-12
Successor callsigns
Callsigns held now by people who previously held AB8TT.
No current licensee on record previously held this callsign.