Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MRZ callsign genealogy
Currently held by Obritschkewitsch, Nick
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 W7MRZ's current licensee, walking backwards.
- Obritschkewitsch, NickORgranted 2014-06-26cancelled 2017-06-30
Successor callsigns
Callsigns held now by people who previously held W7MRZ.
- Obritschkewitsch, NickORgranted 2026-07-24