Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WT7G callsign genealogy
Currently held by Dierks, John L
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 WT7G's current licensee, walking backwards.
- Dierks, John LWAgranted 2018-04-17cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held WT7G.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WT7G, oldest first.
- BROWN, GILBERT W AZ1994-01-18 → cancelled 2000-05-14
- Rafael, John D WA2012-09-05 → cancelled 2017-01-18
- Dierks, John L WA2019-02-20 active