Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4OZ callsign genealogy
Currently held by ROWE, JACKIE H
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 K4OZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4OZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4OZ, oldest first.
- HOLDEN, HAROLD B SC2006-09-13 → cancelled 2018-11-06
- ROWE, JACKIE H NC2018-11-24 active