Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7DSI callsign genealogy
Currently held by SILLS, DOUGLAS E
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 W7DSI's current licensee, walking backwards.
- SILLS, DOUGLAS ENVgranted 2009-09-17cancelled 2009-12-22
Successor callsigns
Callsigns held now by people who previously held W7DSI.
No current licensee on record previously held this callsign.