Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0XB callsign genealogy
Currently held by Tharp, David 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 AB0XB's current licensee, walking backwards.
- Tharp, David LCOgranted 2002-10-03cancelled 2002-11-05
Successor callsigns
Callsigns held now by people who previously held AB0XB.
- Tharp, David LCOgranted 2021-01-09