Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9HZ callsign genealogy
Currently held by ZOOK, 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 N9HZ's current licensee, walking backwards.
- KC9TSAcancelledBrent Zook Memorial GroupINgranted 2011-02-28cancelled 2011-03-22
Successor callsigns
Callsigns held now by people who previously held N9HZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9HZ, oldest first.
- ZOOK, ROBERT B IN2005-03-02 → cancelled 2010-12-30
- Brent Zook Memorial Group IN2021-04-19 active