Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4NRL callsign genealogy
Currently held by LUEDTKE, DAN
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 KD4NRL's current licensee, walking backwards.
- Luedtke, DanCAgranted 2023-12-27cancelled 2024-01-23
Successor callsigns
Callsigns held now by people who previously held KD4NRL.
- LUEDTKE, DANCAgranted 2024-04-05
All historical holders
Every license row we've seen with the callsign KD4NRL, oldest first.
- STACK, WILLIAM V FL1992-04-28 → cancelled 2004-04-29
- LUEDTKE, DAN CA2024-01-23 → cancelled 2024-04-05