Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4MMM callsign genealogy
Currently held by Burgess Jr, Howard J
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 KM4MMM's current licensee, walking backwards.
- Jolly, MikeNCgranted 2025-06-18cancelled 2025-07-08
Successor callsigns
Callsigns held now by people who previously held KM4MMM.
- Burgess Jr, Howard JSCgranted 2026-02-03
All historical holders
Every license row we've seen with the callsign KM4MMM, oldest first.
- Burgess Jr, Howard J SC2015-08-12 → cancelled 2016-03-29
- Jolly, Mike NC2025-07-08 active