Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0QT callsign genealogy
Currently held by CHRISTENSON, DEREK 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 AC0QT's current licensee, walking backwards.
- CHRISTENSON, DEREK AIAgranted 2006-12-07cancelled 2009-12-11
Successor callsigns
Callsigns held now by people who previously held AC0QT.
- CHRISTENSON, DEREK AIAgranted 2019-10-17