Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB0FZJ callsign genealogy
Currently held by Giarratano, Timothy A
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 KB0FZJ's current licensee, walking backwards.
- Giarratano, Timothy ACOgranted 2017-09-25cancelled 2017-10-14
Successor callsigns
Callsigns held now by people who previously held KB0FZJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB0FZJ, oldest first.
- PORTER, JASON M MO1990-02-20 → cancelled 2002-03-07
- Giarratano, Timothy A CO2017-10-14 active