Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ZAA callsign genealogy
Currently held by Schoettler, Steve
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 K4ZAA's current licensee, walking backwards.
- Schoettler, SteveCAgranted 2023-12-30cancelled 2024-01-20
Successor callsigns
Callsigns held now by people who previously held K4ZAA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZAA, oldest first.
- LAMB, JAMES P AL1998-10-15 → cancelled 2010-10-16
- Schoettler, Steve CA2024-01-20 active