Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0MDF callsign genealogy
Currently held by FISH, MARK 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 W0MDF's current licensee, walking backwards.
- FISH, MARK DIAgranted 1999-07-31cancelled 2000-06-23
Successor callsigns
Callsigns held now by people who previously held W0MDF.
No current licensee on record previously held this callsign.