Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6YKX callsign genealogy
Currently held by Duer, Robert B
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 N6YKX's current licensee, walking backwards.
- Duer, Robert BTXgranted 2002-02-13cancelled 2009-04-25
Successor callsigns
Callsigns held now by people who previously held N6YKX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6YKX, oldest first.
- KOSTENKO JR, FRANKLIN C CA1990-04-03 → cancelled 2002-04-04
- Duer, Robert B CA2009-04-25 → cancelled 2021-04-27