Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AG5SY callsign genealogy
Currently held by Keiser, Jonathan Z
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 AG5SY's current licensee, walking backwards.
- Keiser, Jonathan ZTXgranted 2018-12-28cancelled 2019-02-07
Successor callsigns
Callsigns held now by people who previously held AG5SY.
No current licensee on record previously held this callsign.