Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0CAO callsign genealogy
Currently held by Ormsby, Chris A
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 K0CAO's current licensee, walking backwards.
- Ormsby, ChrisCOgranted 2022-11-02cancelled 2022-11-22
Successor callsigns
Callsigns held now by people who previously held K0CAO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0CAO, oldest first.
- Ormsby, Chris A CO2002-03-30 → cancelled 2014-04-01
- Ormsby, Chris NE2022-11-22 active