Confidence: Medium · Source: FCC ULS · As of 2026-09-12
ND1R callsign genealogy
Currently held by Deinzer, Walter F
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 ND1R's current licensee, walking backwards.
- Deinzer, Walter FNMgranted 2024-03-06cancelled 2024-03-26
Successor callsigns
Callsigns held now by people who previously held ND1R.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign ND1R, oldest first.
- COLLEY, MICHAEL E TX1999-12-24 → cancelled 2011-12-28
- Nagakura, Dai WA2012-03-02 → cancelled 2024-03-05
- Deinzer, Walter F NM2024-03-26 active