Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD0B callsign genealogy
Currently held by Balfour, David 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 AD0B's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AD0B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AD0B, oldest first.
- HAMILTON, ROBERT A IA2008-01-01 → cancelled 2020-01-09
- Balfour, David A MO2020-02-19 active