Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0BTU callsign genealogy
Currently held by WATERS, MICHAEL 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 W0BTU's current licensee, walking backwards.
- WATERS, MICHAEL JMOgranted 1998-07-02cancelled 2001-06-26
Successor callsigns
Callsigns held now by people who previously held W0BTU.
No current licensee on record previously held this callsign.