Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4MMO callsign genealogy
Currently held by GILLIAN, ROBERT L
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 KM4MMO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4MMO.
- GILLIAN, ROBERT LSCgranted 2017-12-08