Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0TBX callsign genealogy
Currently held by Johnson, Robert W
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 W0TBX's current licensee, walking backwards.
- JOHNSON, ROBERT WKSgranted 1995-06-20cancelled 2003-03-21
Successor callsigns
Callsigns held now by people who previously held W0TBX.
- Johnson, Robert WKSgranted 2021-02-23