Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KB5MB callsign genealogy
Currently held by MOORE JR, CLEVELAND F
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 KB5MB's current licensee, walking backwards.
- BOWERS, MARK TTXgranted 2024-03-13cancelled 2024-03-30
Successor callsigns
Callsigns held now by people who previously held KB5MB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5MB, oldest first.
- MOORE JR, CLEVELAND F OK2004-03-01 → cancelled 2016-05-25
- BOWERS, MARK T TX2024-03-30 active