Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4EJM callsign genealogy
Currently held by MUELLER, ELIZABETH J
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 K4EJM's current licensee, walking backwards.
- MUELLER, ELIZABETH JFLgranted 2011-06-23cancelled 2015-09-29
Successor callsigns
Callsigns held now by people who previously held K4EJM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4EJM, oldest first.
- HARRIS SR, JAMES W GA1997-02-12 → cancelled 2009-02-13
- MUELLER, ELIZABETH J FL2025-07-22 active