Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4WEM callsign genealogy
Currently held by MICHEL, WILLIAM D
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 K4WEM's current licensee, walking backwards.
- Mullis, William ESCgranted 2016-02-18cancelled 2018-04-28
Successor callsigns
Callsigns held now by people who previously held K4WEM.
- MICHEL, WILLIAM DHIgranted 2009-05-19cancelled 2009-11-28
All historical holders
Every license row we've seen with the callsign K4WEM, oldest first.
- MICHEL, WILLIAM D HI2008-02-20 → cancelled 2009-05-19
- Mullis, William E SC2018-04-28 active