Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6GSC callsign genealogy
Currently held by Osterman, Frederick H
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 W6GSC's current licensee, walking backwards.
- OSTERMAN, FREDERICK HCAgranted 1997-06-16cancelled 2004-01-16
Successor callsigns
Callsigns held now by people who previously held W6GSC.
- Osterman, Fred HCAgranted 2018-05-22