Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5SUB callsign genealogy
Currently held by Butler Jr, Daniel C
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 K5SUB's current licensee, walking backwards.
- Butler Jr, Daniel CTXgranted 2020-06-08cancelled 2020-06-27
Successor callsigns
Callsigns held now by people who previously held K5SUB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5SUB, oldest first.
- AARON, JAMES R TX2007-03-06 → cancelled 2019-05-29
- Butler Jr, Daniel C TX2020-06-27 active