Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0DDJ callsign genealogy
Currently held by OLSON, BIRGER C
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 KA0DDJ's current licensee, walking backwards.
- OLSON, BIRGER CMNgranted 2003-09-23cancelled 2003-10-18
Successor callsigns
Callsigns held now by people who previously held KA0DDJ.
No current licensee on record previously held this callsign.