Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MDF callsign genealogy
Currently held by HILDEBRANDT, CHARLES H
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 W5MDF's current licensee, walking backwards.
- Finley, Michael DTXgranted 2021-07-21cancelled 2022-01-28
Successor callsigns
Callsigns held now by people who previously held W5MDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5MDF, oldest first.
- HILDEBRANDT, CHARLES H FL1994-09-16 → cancelled 2006-09-19
- Finley, Michael D TX2022-01-28 active