Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MHZ callsign genealogy
Currently held by ROIG, WINSTON
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 W3MHZ's current licensee, walking backwards.
- Campbell, John TPAgranted 2023-06-22cancelled 2023-08-08
Successor callsigns
Callsigns held now by people who previously held W3MHZ.
- ROIG, WINSTONPAgranted 2020-07-14
All historical holders
Every license row we've seen with the callsign W3MHZ, oldest first.
- CAMPBELL, JAMES P NM2002-01-23 → cancelled 2014-01-24
- ROIG, WINSTON PA2015-01-30 → cancelled 2020-07-14
- Campbell, John T PA2023-08-08 active