Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9DIW callsign genealogy
Currently held by ANDERSEN JR, ARLOW W
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 N9DIW's current licensee, walking backwards.
- Schmit, William JWIgranted 2015-03-30cancelled 2016-01-09
Successor callsigns
Callsigns held now by people who previously held N9DIW.
- ANDERSEN JR, ARLOW WMNgranted 2020-06-12
All historical holders
Every license row we've seen with the callsign N9DIW, oldest first.
- ANDERSEN JR, ARLOW W MN1998-01-16 → cancelled 2000-05-23
- Schmit, William J WI2026-02-18 active