Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7DXD callsign genealogy
Currently held by Shimp, Zachary 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 W7DXD's current licensee, walking backwards.
- Shimp, Zachary DWAgranted 2018-12-18cancelled 2020-05-22
Successor callsigns
Callsigns held now by people who previously held W7DXD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7DXD, oldest first.
- BURTLESS, LEWIS G AZ2007-01-24 → cancelled 2019-03-26
- Shimp, Zachary D WA2020-05-22 active