Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TDS callsign genealogy
Currently held by Shepherd Jr, Thomas 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 W4TDS's current licensee, walking backwards.
- Shepherd Jr, Thomas DALgranted 2012-04-19cancelled 2012-07-10
Successor callsigns
Callsigns held now by people who previously held W4TDS.
No current licensee on record previously held this callsign.