Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AG0O callsign genealogy
Currently held by Williams, Lawrence H
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 AG0O's current licensee, walking backwards.
- YUSTEN, MARK JIAgranted 2003-11-25cancelled 2010-07-07
Successor callsigns
Callsigns held now by people who previously held AG0O.
- Williams, Lawrence HTNgranted 2005-07-23cancelled 2009-07-17
All historical holders
Every license row we've seen with the callsign AG0O, oldest first.
- Williams, Lawrence H TN2001-05-08 → cancelled 2005-07-23
- YUSTEN, MARK J IA2020-05-19 active