Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4MPU callsign genealogy
Currently held by Wheeler, Aaron C
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 KM4MPU's current licensee, walking backwards.
- CARROLL II, WILLIAM TTNgranted 2016-11-14cancelled 2018-04-06
Successor callsigns
Callsigns held now by people who previously held KM4MPU.
- Wheeler, Aaron CKYgranted 2016-01-05
All historical holders
Every license row we've seen with the callsign KM4MPU, oldest first.
- Wheeler, Aaron C KY2015-08-17 → cancelled 2016-01-05
- CARROLL II, WILLIAM T TN2018-04-06 active