Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU0KOA callsign genealogy
Currently held by Grundmeier, Allen C
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 KU0KOA's current licensee, walking backwards.
- Grundmeier, Allen CMNgranted 2014-04-30cancelled 2023-07-28
Successor callsigns
Callsigns held now by people who previously held KU0KOA.
- Grundmeier, Allen CIAgranted 2023-08-15