Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB7F callsign genealogy
Currently held by MING, DONALD 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 WB7F's current licensee, walking backwards.
- STEWART, JOEL RUTgranted 2008-04-17cancelled 2012-01-31
Successor callsigns
Callsigns held now by people who previously held WB7F.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB7F, oldest first.
- MING, DONALD L UT1999-11-16 → cancelled 2012-01-10
- STEWART, JOEL R UT2021-12-09 active