Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4QFU callsign genealogy
Currently held by CALDWELL, GENE M
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 KJ4QFU'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 KJ4QFU.
- CALDWELL, GENE MNCgranted 2009-12-29cancelled 2012-09-22