Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW3DX callsign genealogy
Currently held by ZINN, CHARLES C
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 WW3DX's current licensee, walking backwards.
- ZINN, CHARLES CVAgranted 2005-12-06cancelled 2006-07-14
Successor callsigns
Callsigns held now by people who previously held WW3DX.
- Ross, Dominic VMDgranted 2019-10-15
All historical holders
Every license row we've seen with the callsign WW3DX, oldest first.
- ROSS, DOMINIC V MD1997-10-15 → cancelled 1999-11-04
- ZINN, CHARLES C VA2026-07-03 active