Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9THK callsign genealogy
Currently held by RIEMENSCHNEIDER, DAVID M
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 N9THK's current licensee, walking backwards.
- Riemenschneider, David MWIgranted 2024-02-22cancelled 2024-03-15
Successor callsigns
Callsigns held now by people who previously held N9THK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9THK, oldest first.
- RIEMENSCHNEIDER, DAVID M WI2003-02-06 → cancelled 2015-05-05
- Riemenschneider, David M WI2024-03-15 active