Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4FTX callsign genealogy
Currently held by ROTHLUEBBER, LEONARD 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 KC4FTX's current licensee, walking backwards.
- ROTHLUEBBER, LEONARD WSCgranted 2024-11-05cancelled 2024-11-26
- KC4FUOno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KC4FTX.
No current licensee on record previously held this callsign.