Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MRO callsign genealogy
Currently held by OPPERMAN, MARK W
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 W5MRO's current licensee, walking backwards.
- OPPERMAN, MARK WTXgranted 2003-06-10cancelled 2003-07-04
Successor callsigns
Callsigns held now by people who previously held W5MRO.
No current licensee on record previously held this callsign.