Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4GZX callsign genealogy
Currently held by Esmond JR, John H
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 KN4GZX's current licensee, walking backwards.
- Esmond JR, John HTNgranted 2021-02-27cancelled 2021-03-19
Successor callsigns
Callsigns held now by people who previously held KN4GZX.
All historical holders
Every license row we've seen with the callsign KN4GZX, oldest first.
- Esmond Jr, John H TN2017-10-27 → cancelled 2021-02-27
- Esmond JR, John H TN2021-03-19 → cancelled 2023-12-05