Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KE4MPH callsign genealogy
Currently held by BONAWITZ, GEORGE W
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 KE4MPH's current licensee, walking backwards.
- Herum, Michael PALgranted 2024-04-10cancelled 2024-05-03
Successor callsigns
Callsigns held now by people who previously held KE4MPH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KE4MPH, oldest first.
- BONAWITZ, GEORGE W NC1994-06-21 → cancelled 2006-06-22
- Herum, Michael P AL2024-05-03 active