Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4USV callsign genealogy
Currently held by Docktor, Frank 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 KI4USV'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 KI4USV.
- Docktor 404, Frank MFLgranted 2017-02-10