Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4EXM callsign genealogy
Currently held by Floyd, James P
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 K4EXM's current licensee, walking backwards.
- Floyd, James PGAgranted 2025-06-25cancelled 2026-04-28
Successor callsigns
Callsigns held now by people who previously held K4EXM.
No current licensee on record previously held this callsign.