Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4GDS callsign genealogy
Currently held by SILWANICZ, ROBERT
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 W4GDS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4GDS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4GDS, oldest first.
- SILWANICZ, ROBERT FL1996-06-18 → cancelled 2008-06-19
- SCHWAB, GEORGE D FL2025-01-16 active