Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4YUU callsign genealogy
Currently held by MULLANNIX, WALTER 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 N4YUU's current licensee, walking backwards.
- KC4OYPno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held N4YUU.
- MULLANNIX, WALTER WKYgranted 2023-05-13