Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9MDH callsign genealogy
Currently held by Harwood, Michael 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 W9MDH's current licensee, walking backwards.
- Harwood, Michael DTNgranted 2022-03-09cancelled 2022-03-29
Successor callsigns
Callsigns held now by people who previously held W9MDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9MDH, oldest first.
- Hazelrigg, Michael D IL2007-05-01 → cancelled 2019-05-02
- Harwood, Michael D TN2022-03-29 active