Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4EMU callsign genealogy
Currently held by JETT, JAMES A
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 K4EMU's current licensee, walking backwards.
- WILKES JR, WILLIAM JSCgranted 2013-10-24cancelled 2017-07-29
Successor callsigns
Callsigns held now by people who previously held K4EMU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4EMU, oldest first.
- JETT, JAMES A KY1998-10-16 → cancelled 2010-10-19
- WILKES JR, WILLIAM J SC2017-07-29 active