Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3TU callsign genealogy
Currently held by CARLSON, DAVID J
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 AB3TU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AB3TU.
- CARLSON, DAVID JVAgranted 2017-01-28