Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KU4MM callsign genealogy
Currently held by Cassidy, Thomas F
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 KU4MM's current licensee, walking backwards.
- CASSIDY, THOMAS Fcancelled 1997-11-21
Successor callsigns
Callsigns held now by people who previously held KU4MM.
No current licensee on record previously held this callsign.