Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4YHH callsign genealogy
Currently held by Madrigal, Oscar
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 KN4YHH'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 KN4YHH.
- Madrigal, OscarFLgranted 2022-02-25cancelled 2026-04-17