Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4DUT callsign genealogy
Currently held by FRANZONI, DAVID 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 KF4DUT's current licensee, walking backwards.
- KB4OOGno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF4DUT.
- FRANZONI, DAVID MFLgranted 2021-03-19