Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD8OZ callsign genealogy
Currently held by Geahan, Patrick M
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 AD8OZ's current licensee, walking backwards.
- Geahan, Patrick MMIgranted 2025-02-28cancelled 2025-03-24
Successor callsigns
Callsigns held now by people who previously held AD8OZ.
- Geahan, Patrick MMIgranted 2025-04-18