Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD2OR callsign genealogy
Currently held by Castillo, David 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 KD2OR's current licensee, walking backwards.
- Castillo, David ENYgranted 2022-07-08cancelled 2023-09-30
Successor callsigns
Callsigns held now by people who previously held KD2OR.
No current licensee on record previously held this callsign.