Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM7DB callsign genealogy
Currently held by SCHLABACH, MICHAEL L
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 WM7DB's current licensee, walking backwards.
- SCHLABACH, MICHAEL LORgranted 2023-10-03cancelled 2024-04-30
Successor callsigns
Callsigns held now by people who previously held WM7DB.
No current licensee on record previously held this callsign.