Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JBM callsign genealogy
Currently held by MELCHIORI, JOHN B
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 K4JBM's current licensee, walking backwards.
- MELCHIORI, JOHN BFLgranted 1999-02-11cancelled 2000-06-27
Successor callsigns
Callsigns held now by people who previously held K4JBM.
No current licensee on record previously held this callsign.