Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD0OBI callsign genealogy
Currently held by ADSON, JAMES B
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 KD0OBI's current licensee, walking backwards.
- ADSON, JAMES BCOgranted 2011-03-24cancelled 2011-03-29
Successor callsigns
Callsigns held now by people who previously held KD0OBI.
- Adson, JAMES BCOgranted 2011-03-24cancelled 2016-05-13