Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7BA callsign genealogy
Currently held by ROBINSON, WILLIAM C
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 K7BA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K7BA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7BA, oldest first.
- ROBINSON, WILLIAM C WY1987-09-08 → cancelled 1999-09-10
- BLACK JR, ROBERT E MT2010-01-08 → cancelled 2015-02-18
- Mittelstaedt, Donald L WA2017-03-12 active