Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5TI callsign genealogy
Currently held by DUCKWORTH, CARL S
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 KB5TI's current licensee, walking backwards.
- DUCKWORTH, ROGER DARgranted 2006-06-03cancelled 2012-05-25
Successor callsigns
Callsigns held now by people who previously held KB5TI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5TI, oldest first.
- DUCKWORTH, CARL S AR1992-03-03 → cancelled 2004-03-04
- DUCKWORTH, ROGER D AR2022-04-05 active