Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AD0TD callsign genealogy
Currently held by Duff, Troy D
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 AD0TD's current licensee, walking backwards.
- Duff, Troy DIAgranted 2013-11-18cancelled 2014-04-15
Successor callsigns
Callsigns held now by people who previously held AD0TD.
No current licensee on record previously held this callsign.