Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TZY callsign genealogy
Currently held by Katz, Alexander I
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 K4TZY's current licensee, walking backwards.
- Katz, Alexander ICAgranted 2018-11-09cancelled 2021-04-10
Successor callsigns
Callsigns held now by people who previously held K4TZY.
No current licensee on record previously held this callsign.