Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MMA callsign genealogy
Currently held by McGuire, Arthur 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 K4MMA's current licensee, walking backwards.
- McGuire, Arthur MNCgranted 2010-12-15cancelled 2016-01-08
Successor callsigns
Callsigns held now by people who previously held K4MMA.
No current licensee on record previously held this callsign.