Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3TDX callsign genealogy
Currently held by Freitag, Thomas 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 W3TDX's current licensee, walking backwards.
- Freitag, Thomas MPAgranted 2023-08-11cancelled 2026-08-28
Successor callsigns
Callsigns held now by people who previously held W3TDX.
- TESAURO JR, JOSEPH CPAgranted 2021-07-30
All historical holders
Every license row we've seen with the callsign W3TDX, oldest first.
- TESAURO JR, JOSEPH C PA2012-05-01 → cancelled 2021-07-30
- Freitag, Thomas M PA2026-08-28 active