Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KU4MB callsign genealogy
Currently held by Freund, James 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 KU4MB's current licensee, walking backwards.
- FREUND, JAMES Dcancelled 1997-11-13
Successor callsigns
Callsigns held now by people who previously held KU4MB.
No current licensee on record previously held this callsign.