Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4GSR callsign genealogy
Currently held by TOBIAS, PRESTON J
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 W4GSR's current licensee, walking backwards.
- TOBIAS, PRESTON JSCgranted 2008-09-17cancelled 2011-11-01
Successor callsigns
Callsigns held now by people who previously held W4GSR.
No current licensee on record previously held this callsign.