Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0IZY callsign genealogy
Currently held by KLUTH, CHRISTIAN 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 N0IZY's current licensee, walking backwards.
- AUMANN, SHIRAH MMOgranted 2002-02-06cancelled 2002-04-04
Successor callsigns
Callsigns held now by people who previously held N0IZY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0IZY, oldest first.
- KLUTH, CHRISTIAN J CO1988-03-15 → cancelled 2000-03-16
- AUMANN, SHIRAH M MO2022-02-08 active