Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7SDV callsign genealogy
Currently held by Vollrath, Stephen D
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 W7SDV's current licensee, walking backwards.
- Vollrath, Stephen DAZgranted 2014-03-14cancelled 2020-06-19
Successor callsigns
Callsigns held now by people who previously held W7SDV.
No current licensee on record previously held this callsign.