Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4EM callsign genealogy
Currently held by Mann, Earl K
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 KY4EM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KY4EM.
No current licensee on record previously held this callsign.