Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1CDH callsign genealogy
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 N1CDH's current licensee, walking backwards.
- Hassebrook, Nicholas DNEgranted 2025-02-21cancelled 2025-03-11
Successor callsigns
Callsigns held now by people who previously held N1CDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1CDH, oldest first.
- Hassebrook, Nicholas D NE2025-03-11 active
- ——