Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6RTB callsign genealogy
Currently held by Morigi, Mario
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 K6RTB's current licensee, walking backwards.
- Morigi, MarioCAgranted 2007-05-10cancelled 2016-11-22
Successor callsigns
Callsigns held now by people who previously held K6RTB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6RTB, oldest first.
- HART, GEORGE T WA1989-03-21 → cancelled 2001-03-22
- Morigi, Mario CA2016-11-22 active