Confidence: Medium · Source: FCC ULS · As of 2026-09-15
KF5ZUX callsign genealogy
Currently held by Cosby, Thomas E
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 KF5ZUX's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KF5ZUX.
- Cosby, Thomas ETXgranted 2014-02-04cancelled 2026-03-06