Confidence: Medium · Source: FCC ULS · As of 2026-10-24
K5KOZ callsign genealogy
Currently held by Kosmenko, Christopher 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 K5KOZ's current licensee, walking backwards.
- Kosmenko, Christopher JTXgranted 2026-09-01cancelled 2026-10-02
Successor callsigns
Callsigns held now by people who previously held K5KOZ.
No current licensee on record previously held this callsign.