Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6ZKI callsign genealogy
Currently held by Pszenitzki, Jon L
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 K6ZKI's current licensee, walking backwards.
- Smith, James MCAgranted 2021-03-01cancelled 2025-03-04
Successor callsigns
Callsigns held now by people who previously held K6ZKI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6ZKI, oldest first.
- AMMON, HARRY C CA1994-08-19 → cancelled 2006-08-22
- Pszenitzki, Jon L CA2009-01-30 → cancelled 2021-02-02
- Smith, James M CA2025-03-04 active