Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W2DFS callsign genealogy
Currently held by Swirnoff, David
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 W2DFS's current licensee, walking backwards.
- Swirnoff, DavidNJgranted 2025-11-25cancelled 2025-12-16
Successor callsigns
Callsigns held now by people who previously held W2DFS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W2DFS, oldest first.
- Amdursky, Ralph J FL2007-10-29 → cancelled 2019-12-11
- Swirnoff, David NJ2025-12-16 active