Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0QBU callsign genealogy
Currently held by Davis, Donald G
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 K0QBU's current licensee, walking backwards.
- Davis, Donald GCOgranted 2014-02-21cancelled 2014-05-09
Successor callsigns
Callsigns held now by people who previously held K0QBU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0QBU, oldest first.
- CRUMMER, HOWARD A IA1994-07-15 → cancelled 2006-07-18
- Davis, Donald G TX2024-04-10 active