Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3OD callsign genealogy
Currently held by KAUFFMAN, RYAN D
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 KC3OD's current licensee, walking backwards.
- KAUFFMAN, RYAN DOHgranted 2020-06-10cancelled 2020-07-24
Successor callsigns
Callsigns held now by people who previously held KC3OD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC3OD, oldest first.
- BUCHER, HAROLD M PA1997-02-20 → cancelled 2009-02-21
- KAUFFMAN, RYAN D OH2020-07-24 active