Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3TRM callsign genealogy
Currently held by SOSH, STEPHEN F
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 W3TRM's current licensee, walking backwards.
- MAYKA, THOMASPAgranted 2020-06-02cancelled 2020-11-17
Successor callsigns
Callsigns held now by people who previously held W3TRM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3TRM, oldest first.
- SOSH, STEPHEN F PA1997-02-21 → cancelled 2009-02-24
- MAYKA, THOMAS R PA2020-11-17 active