Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7ZDF callsign genealogy
Currently held by Studley, Stephen W
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 K7ZDF's current licensee, walking backwards.
- Studley, Stephen WWAgranted 2017-12-20cancelled 2018-01-13
Successor callsigns
Callsigns held now by people who previously held K7ZDF.
- Studley, Stephen WWAgranted 2022-11-01