Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KH6JMM callsign genealogy
Currently held by Montalbano, John 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 KH6JMM's current licensee, walking backwards.
- Michael, JosephineHIgranted 2023-11-29cancelled 2023-12-22
Successor callsigns
Callsigns held now by people who previously held KH6JMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KH6JMM, oldest first.
- Montalbano, John M HI2009-10-20 → cancelled 2021-10-21
- Michael, Josephine HI2023-12-22 active