Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7DTF callsign genealogy
Currently held by Smith, William R
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 W7DTF's current licensee, walking backwards.
- Smith, William RORgranted 2022-04-04cancelled 2022-04-29
Successor callsigns
Callsigns held now by people who previously held W7DTF.
No current licensee on record previously held this callsign.