Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4M callsign genealogy
Currently held by Dobbs, Brian M
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 WD4M's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WD4M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD4M, oldest first.
- HECTOR, WILFRID FL2009-01-06 → cancelled 2020-02-04
- Dobbs, Brian M TN2020-02-22 active