Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD3CAO callsign genealogy
Currently held by Ernst III, Robert N
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 KD3CAO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KD3CAO.
- Ernst III, Robert NPAgranted 2026-01-03cancelled 2026-04-07