Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1OO callsign genealogy
Currently held by Andres, Matthias W
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 AB1OO's current licensee, walking backwards.
- Andres, Matthias WMAgranted 2011-02-07cancelled 2011-03-31
Successor callsigns
Callsigns held now by people who previously held AB1OO.
No current licensee on record previously held this callsign.