Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA7O callsign genealogy
Currently held by PICKFORD, STEWART G
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 AA7O's current licensee, walking backwards.
- Buchanan, Dohn RAZgranted 2004-08-26cancelled 2010-02-19
Successor callsigns
Callsigns held now by people who previously held AA7O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA7O, oldest first.
- PICKFORD, STEWART G WA1998-01-30 → cancelled 2010-02-02
- Madlem, Andrew OR2020-08-25 → cancelled 2020-12-31
- Buchanan, Dohn R AZ2021-01-12 active