Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4AOS callsign genealogy
Currently held by Hildebrand, Aaron
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 KR4AOS's current licensee, walking backwards.
- Hildebrand, AaronGAgranted 2024-01-19cancelled 2025-01-21
Successor callsigns
Callsigns held now by people who previously held KR4AOS.
- Hildebrand, AaronGAgranted 2025-02-11