Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6ADA callsign genealogy
Currently held by KOESTER, ANTHONY G
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 W6ADA's current licensee, walking backwards.
- NOTTINGHAM, ORRY SCAgranted 2011-09-20cancelled 2014-12-12
Successor callsigns
Callsigns held now by people who previously held W6ADA.
All historical holders
Every license row we've seen with the callsign W6ADA, oldest first.
- KOESTER, ANTHONY G CA2007-06-26 → cancelled 2009-12-15
- Nottingham, Orry S CA2014-12-12 → cancelled 2020-03-23