Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT4JB callsign genealogy
Currently held by BRUBAKER, JOHN M
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 KT4JB's current licensee, walking backwards.
- BRUBAKER, JOHN MVAgranted 2018-05-18cancelled 2018-10-16
Successor callsigns
Callsigns held now by people who previously held KT4JB.
No current licensee on record previously held this callsign.