Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4MAC callsign genealogy
Currently held by MacKenzie, Joseph A
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 KK4MAC's current licensee, walking backwards.
- MacKenzie, Joseph AFLgranted 2011-02-11cancelled 2016-10-21
Successor callsigns
Callsigns held now by people who previously held KK4MAC.
- CUMMINGS, MARVIN AKYgranted 2013-09-04cancelled 2025-09-05
All historical holders
Every license row we've seen with the callsign KK4MAC, oldest first.
- CUMMINGS, MARVIN A KY2011-09-09 → cancelled 2013-09-04
- MacKenzie, Joseph A FL2016-10-21 active