Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3RJF callsign genealogy
Currently held by Kirbos, Robert J
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 KC3RJF's current licensee, walking backwards.
- Kirbos, Robert JPAgranted 2020-11-17cancelled 2020-12-05
Successor callsigns
Callsigns held now by people who previously held KC3RJF.
No current licensee on record previously held this callsign.