Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF0ARU callsign genealogy
Currently held by Schlueter, Carl R
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 KF0ARU's current licensee, walking backwards.
- Schlueter, Carl RMOgranted 2022-11-26cancelled 2023-03-13
Successor callsigns
Callsigns held now by people who previously held KF0ARU.
- Schlueter, Carl RMOgranted 2022-11-26cancelled 2023-03-13
All historical holders
Every license row we've seen with the callsign KF0ARU, oldest first.
- Schlueter, Carl R MO2020-06-25 → cancelled 2022-11-26
- Schlueter, Carl R MO2023-03-13 active