Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7BUM callsign genealogy
Currently held by Donoho, Robert B
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 KB7BUM's current licensee, walking backwards.
- DONOHO, ROBERT BUTgranted 2018-11-28cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held KB7BUM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB7BUM, oldest first.
- BURNS, TERRENCE E WA1997-02-04 → cancelled 2009-02-05
- Donoho, Robert B UT2020-12-29 active