Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7UI callsign genealogy
Currently held by Clark, Gregg O
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 AD7UI's current licensee, walking backwards.
- Clark, Gregg OIDgranted 2008-03-06cancelled 2008-05-21
Successor callsigns
Callsigns held now by people who previously held AD7UI.
No current licensee on record previously held this callsign.