Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NZ0R callsign genealogy
Currently held by KARNAUSKAS, THOMAS J
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 NZ0R's current licensee, walking backwards.
- RAIRDIN, CRAIG AIAgranted 2004-09-03cancelled 2005-03-25
Successor callsigns
Callsigns held now by people who previously held NZ0R.
All historical holders
Every license row we've seen with the callsign NZ0R, oldest first.
- KARNAUSKAS, THOMAS J MN2001-03-13 → cancelled 2001-04-24
- RAIRDIN, CRAIG A IA2025-06-06 active