Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4FLK callsign genealogy
Currently held by FLORIDA KEYS AMATEUR RADIO CLUB
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 K4FLK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4FLK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4FLK, oldest first.
- DIEDERICH, DELMAR L FL1991-03-26 → cancelled 2003-03-27
- FLORIDA KEYS AMATEUR RADIO CLUB FL2022-01-03 active