Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZFN callsign genealogy
Currently held by ROYAL, DAVID 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 K4ZFN's current licensee, walking backwards.
- ROYAL, DAVID JFLgranted 2010-05-14cancelled 2011-05-03
Successor callsigns
Callsigns held now by people who previously held K4ZFN.
No current licensee on record previously held this callsign.