Confidence: Medium · Source: FCC ULS · As of 2026-09-09
W4DRZ callsign genealogy
Currently held by Thompson, David T
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 W4DRZ's current licensee, walking backwards.
- Thompson, David TTNgranted 2024-11-16
Successor callsigns
Callsigns held now by people who previously held W4DRZ.
- Thompson, David TTNgranted 2024-11-16