Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6MRR callsign genealogy
Currently held by BARNETT, JOHN 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 W6MRR's current licensee, walking backwards.
- Rothfield, Martin RDCgranted 2010-04-26cancelled 2014-11-04
Successor callsigns
Callsigns held now by people who previously held W6MRR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6MRR, oldest first.
- BARNETT, JOHN W CA1997-02-12 → cancelled 2009-02-13
- Rothfield, Martin R CA2024-10-26 active