Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4EZT callsign genealogy
Currently held by Holzapfel, Kathryn
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 KF4EZT's current licensee, walking backwards.
- Holzapfel, KathrynFLgranted 2018-05-07cancelled 2018-07-24
Successor callsigns
Callsigns held now by people who previously held KF4EZT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4EZT, oldest first.
- Holzapfel Sr, John W NC2005-09-09 → cancelled 2017-11-28
- Holzapfel, Kathryn FL2018-07-24 active