Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KU6O callsign genealogy
Currently held by PORTER, SANDY E
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 KU6O's current licensee, walking backwards.
- Michaelis, AndrewCAgranted 2024-01-17cancelled 2025-02-01
Successor callsigns
Callsigns held now by people who previously held KU6O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KU6O, oldest first.
- PORTER, SANDY E OR2012-12-13 → cancelled 2025-01-14
- Michaelis, Andrew CA2025-02-01 active