Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT4DZ callsign genealogy
Currently held by REEDER, IVAN 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 KT4DZ's current licensee, walking backwards.
- Zulueta, DavidGAgranted 2019-11-01cancelled 2025-04-15
Successor callsigns
Callsigns held now by people who previously held KT4DZ.
- REEDER, IVAN AVAgranted 2011-05-13cancelled 2023-08-08
All historical holders
Every license row we've seen with the callsign KT4DZ, oldest first.
- REEDER, IVAN A VA1995-09-25 → cancelled 2001-08-07
- Zulueta, David GA2025-04-15 active