Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO0H callsign genealogy
Currently held by SCOTT JR, JOHN J
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 KO0H's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KO0H.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO0H, oldest first.
- SCOTT JR, JOHN J MO2012-12-05 → cancelled 2025-02-19
- Emmerling, Patti J TX2025-04-04 active