Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU4RJ callsign genealogy
Currently held by Doby, Ronald A
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 KU4RJ's current licensee, walking backwards.
- WD9DINcancelledcancelled 1998-05-04
Successor callsigns
Callsigns held now by people who previously held KU4RJ.
- Doby, Ronald AVAgranted 1998-05-04cancelled 2004-05-04