Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7UDR callsign genealogy
Currently held by OLIVER, THOMAS M
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 KC7UDR's current licensee, walking backwards.
- N4UPOno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KC7UDR.
- OLIVER, THOMAS MNVgranted 1997-01-16cancelled 2004-12-28