Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KG0AU callsign genealogy
Currently held by OLSON, CURTIS 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 KG0AU's current licensee, walking backwards.
- Groth, David JIAgranted 2018-02-22cancelled 2024-02-13
Successor callsigns
Callsigns held now by people who previously held KG0AU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KG0AU, oldest first.
- OLSON, CURTIS R ND2003-01-15 → cancelled 2014-09-16
- Groth, David J IA2024-02-13 active