Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4RDB callsign genealogy
Currently held by BUSH, ROGER 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 KA4RDB's current licensee, walking backwards.
- BUSH, ROGER DFLgranted 2009-08-03cancelled 2016-06-25
Successor callsigns
Callsigns held now by people who previously held KA4RDB.
No current licensee on record previously held this callsign.