Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA7MO callsign genealogy
Currently held by Oswald, George 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 AA7MO's current licensee, walking backwards.
- Oswald, George MWAgranted 2018-12-28cancelled 2021-03-16
Successor callsigns
Callsigns held now by people who previously held AA7MO.
- WELCH, THOMAS JIDgranted 2006-03-29cancelled 2018-06-19