Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1HDF callsign genealogy
Currently held by Dunbar, William 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 N1HDF's current licensee, walking backwards.
- Dunbar, William ENHgranted 2003-05-02cancelled 2003-05-31
Successor callsigns
Callsigns held now by people who previously held N1HDF.
- Dunbar, William ENHgranted 2020-02-19
All historical holders
Every license row we've seen with the callsign N1HDF, oldest first.
- Dunbar, William E NH2013-04-17 → cancelled 2020-02-19
- —— → cancelled 1997-08-07