Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NZ9O callsign genealogy
Currently held by KRAJEWSKI, LUKAS M
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 NZ9O's current licensee, walking backwards.
- KRAJEWSKI, LUKAS MWIgranted 2020-02-10cancelled 2020-03-21
Successor callsigns
Callsigns held now by people who previously held NZ9O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NZ9O, oldest first.
- SMITH, LARRY IN2007-11-30 → cancelled 2020-02-26
- KRAJEWSKI, LUKAS M MN2020-03-21 active