Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7TDZ callsign genealogy
Currently held by ZIRKLE, THEVIN 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 K7TDZ's current licensee, walking backwards.
- ZIRKLE, THEVIN DSCgranted 2017-06-22cancelled 2017-07-11
Successor callsigns
Callsigns held now by people who previously held K7TDZ.
No current licensee on record previously held this callsign.