Confidence: Medium · Source: FCC ULS · As of 2026-09-11
AF5AM callsign genealogy
Currently held by FIELDS, MARK 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 AF5AM's current licensee, walking backwards.
- Winkelmann, KyleTXgranted 2026-05-14cancelled 2026-07-28
Successor callsigns
Callsigns held now by people who previously held AF5AM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AF5AM, oldest first.
- FIELDS, MARK A TX2012-03-27 → cancelled 2024-06-04
- Winkelmann, Kyle TX2026-07-28 active