Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3TWG callsign genealogy
Currently held by SANKEWITSCH, MICHAEL
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 W3TWG's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W3TWG.
No current licensee on record previously held this callsign.