Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD5OZ callsign genealogy
Currently held by ST JOHN, RICHARD H
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 AD5OZ's current licensee, walking backwards.
- ST JOHN, RICHARD HNMgranted 2003-03-24cancelled 2003-09-19
Successor callsigns
Callsigns held now by people who previously held AD5OZ.
- ST JOHN, RICHARD HNMgranted 2023-11-28