Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5BU callsign genealogy
Currently held by HOPPER, STEPHEN A
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 K5BU's current licensee, walking backwards.
- HOPPER, STEPHEN ATXgranted 2013-11-19cancelled 2020-02-25
Successor callsigns
Callsigns held now by people who previously held K5BU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5BU, oldest first.
- SHEPHERD IV, MALCOLM R TX2007-11-22 → cancelled 2020-02-07
- HOPPER, STEPHEN A TX2020-02-25 active