Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB5DUA callsign genealogy
Currently held by Johnson, Tom 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 KB5DUA's current licensee, walking backwards.
- Johnson, Tom AGAgranted 2013-03-14cancelled 2013-04-02
Successor callsigns
Callsigns held now by people who previously held KB5DUA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5DUA, oldest first.
- JOHNSON, TOM A AZ1990-10-02 → cancelled 2002-10-03
- Johnson, Tom A GA2013-04-02 → cancelled 2025-04-03