Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD8DM callsign genealogy
Currently held by Cadwallader, John
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 AD8DM's current licensee, walking backwards.
- Cadwallader, JohnOHgranted 2018-05-11cancelled 2019-04-17
Successor callsigns
Callsigns held now by people who previously held AD8DM.
No current licensee on record previously held this callsign.