Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD9ARR callsign genealogy
Currently held by Oberfield, Gregory S
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 KD9ARR's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KD9ARR.
- Oberfield, Gregory SILgranted 2025-08-23cancelled 2025-12-09