Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM6JJM callsign genealogy
Currently held by Mosbacher, John 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 KM6JJM's current licensee, walking backwards.
- Mosbacher, John JCAgranted 2016-02-10cancelled 2016-03-01
Successor callsigns
Callsigns held now by people who previously held KM6JJM.
No current licensee on record previously held this callsign.