Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5J callsign genealogy
Currently held by SIVILS, LARRY D
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 KB5J's current licensee, walking backwards.
- Moore, Steven TTXgranted 2016-08-30cancelled 2016-10-18
Successor callsigns
Callsigns held now by people who previously held KB5J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5J, oldest first.
- SIVILS, LARRY D TX2006-02-22 → cancelled 2014-12-07
- Moore, Steven T TX2016-10-18 active