Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0MXX callsign genealogy
Currently held by Shier, Max O
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 K0MXX's current licensee, walking backwards.
- Shier, Max OCOgranted 2019-02-04cancelled 2019-02-23
Successor callsigns
Callsigns held now by people who previously held K0MXX.
No current licensee on record previously held this callsign.