Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF7X callsign genealogy
Currently held by Bosworth, David J
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 AF7X's current licensee, walking backwards.
- Klink, Aaron CCAgranted 2013-12-17cancelled 2014-04-11
Successor callsigns
Callsigns held now by people who previously held AF7X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AF7X, oldest first.
- Bosworth, David J OR2004-03-18 → cancelled 2012-03-21
- Klink, Aaron C CA2024-03-07 active