Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF4UD callsign genealogy
Currently held by HAMMEL, GARY A
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 AF4UD's current licensee, walking backwards.
- HAMMEL, GARY AFLgranted 1998-04-29cancelled 2000-05-18
Successor callsigns
Callsigns held now by people who previously held AF4UD.
No current licensee on record previously held this callsign.