Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9TH callsign genealogy
Currently held by Turpin, Mark A
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 AB9TH's current licensee, walking backwards.
- Turpin, Mark AWIgranted 2001-05-30cancelled 2009-02-27
Successor callsigns
Callsigns held now by people who previously held AB9TH.
No current licensee on record previously held this callsign.