Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9TDA callsign genealogy
Currently held by Sims, Justin J
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 W9TDA's current licensee, walking backwards.
- Sims, Justin JINgranted 2021-03-16cancelled 2021-04-06
Successor callsigns
Callsigns held now by people who previously held W9TDA.
No current licensee on record previously held this callsign.