Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4TDV callsign genealogy
Currently held by De Vries, Tom M
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 W4TDV's current licensee, walking backwards.
- De Vries, Thomas MVAgranted 2014-05-15cancelled 2014-06-24
Successor callsigns
Callsigns held now by people who previously held W4TDV.
No current licensee on record previously held this callsign.