Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0TDJ callsign genealogy
Currently held by Johnson, Thomas D
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 N0TDJ's current licensee, walking backwards.
- Johnson, Thomas DIAgranted 2006-01-04cancelled 2014-09-03
Successor callsigns
Callsigns held now by people who previously held N0TDJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0TDJ, oldest first.
- HILL, JOHN R MN1992-06-23 → cancelled 2004-06-24
- Johnson, Thomas D IA2024-07-06 active