Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM0MRN callsign genealogy
Currently held by NICASTRO, MICHAEL
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 KM0MRN's current licensee, walking backwards.
- ELLISON, YVONNE AUTgranted 2021-04-26cancelled 2021-05-18
Successor callsigns
Callsigns held now by people who previously held KM0MRN.
- NICASTRO, MICHAELCAgranted 2026-06-30
All historical holders
Every license row we've seen with the callsign KM0MRN, oldest first.
- NICASTRO, MICHAEL FL2016-08-06 → cancelled 2016-09-24
- Ellison 602, Yvonne A UT2021-05-18 active