Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MDB callsign genealogy
Currently held by Bayersdorfer, Mitch D
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 W7MDB's current licensee, walking backwards.
- Bayersdorfer, Mitch DORgranted 2017-01-11cancelled 2019-05-25
Successor callsigns
Callsigns held now by people who previously held W7MDB.
- MILLER SR, MORRIS GTXgranted 2006-06-22cancelled 2018-09-06