Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ5IFU callsign genealogy
Currently held by Gustavson, William R
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 KJ5IFU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KJ5IFU.
- GUSTAVSON, WILLIAM RTXgranted 2024-10-26