Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4ZI callsign genealogy
Currently held by FLUMERFELT, CHARLES R
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 KK4ZI's current licensee, walking backwards.
- Carden, Mark WTNgranted 2015-11-10cancelled 2021-04-06
Successor callsigns
Callsigns held now by people who previously held KK4ZI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4ZI, oldest first.
- FLUMERFELT, CHARLES R FL1988-03-29 → cancelled 2000-03-30
- Carden, Mark W TN2021-04-06 active