Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9TJZ callsign genealogy
Currently held by Johnson Jr., Robert 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 K9TJZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K9TJZ.
- Johnson Jr., Robert DTXgranted 2023-03-21