Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4YNO callsign genealogy
Currently held by DE VUYST, HAROLD J
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 K4YNO's current licensee, walking backwards.
- DE VUYST, HAROLD JVAgranted 2009-12-05cancelled 2016-04-09
Successor callsigns
Callsigns held now by people who previously held K4YNO.
No current licensee on record previously held this callsign.