Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4TCB callsign genealogy
Currently held by Miller, Jacob 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 KO4TCB's current licensee, walking backwards.
- Miller, JacobTNgranted 2020-07-31cancelled 2020-08-29
Successor callsigns
Callsigns held now by people who previously held KO4TCB.
No current licensee on record previously held this callsign.