Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7DWD callsign genealogy
Currently held by Dempster, Diane W
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 W7DWD's current licensee, walking backwards.
- Dempster, Diane WWAgranted 2018-02-28cancelled 2019-05-24
Successor callsigns
Callsigns held now by people who previously held W7DWD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7DWD, oldest first.
- Halpern, Lawrence M WA2005-09-09 → cancelled 2017-12-05
- Dempster, Diane W WA2019-05-24 active