Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6RTM callsign genealogy
Currently held by RUHA, JOHN C
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 W6RTM's current licensee, walking backwards.
- RUHA, JOHN CCAgranted 2020-12-18cancelled 2021-03-02
Successor callsigns
Callsigns held now by people who previously held W6RTM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6RTM, oldest first.
- AMES, ORVAND D CA1994-03-15 → cancelled 2006-03-16
- RUHA, JOHN C CA2021-03-02 active