Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9DHD callsign genealogy
Currently held by COLE, DALE 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 N9DHD's current licensee, walking backwards.
- Dvorak, Don HILgranted 2017-02-27cancelled 2017-03-17
Successor callsigns
Callsigns held now by people who previously held N9DHD.
- COLE, DALE HMIgranted 1999-06-10cancelled 2008-07-19
All historical holders
Every license row we've seen with the callsign N9DHD, oldest first.
- Dvorak, Don H IL2017-03-17 active
- COLE, DALE H— → cancelled 1999-06-10