Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4FK callsign genealogy
Currently held by KEY, FLOYD E
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 AD4FK's current licensee, walking backwards.
- KEY, FLOYD ENCgranted 2007-02-10cancelled 2008-10-21
Successor callsigns
Callsigns held now by people who previously held AD4FK.
- KOTLAS, JOSEPH CNCgranted 1996-07-13cancelled 2008-07-15