Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5MU callsign genealogy
Currently held by LA GRONE, ROY
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 AC5MU's current licensee, walking backwards.
- Hart, Earnest RMSgranted 2018-02-09cancelled 2019-03-05
Successor callsigns
Callsigns held now by people who previously held AC5MU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AC5MU, oldest first.
- LA GRONE, ROY MS2013-05-31 → cancelled 2017-07-15
- Hart, Earnest R MS2019-03-05 active