Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9MHD callsign genealogy
Currently held by COSTELLO, EUGENE E
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 W9MHD's current licensee, walking backwards.
- Durrani, MuhammadTNgranted 2022-04-18cancelled 2022-07-01
Successor callsigns
Callsigns held now by people who previously held W9MHD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9MHD, oldest first.
- COSTELLO, EUGENE E AZ2006-01-24 → cancelled 2018-04-11
- Durrani, Muhammad TN2022-07-01 active