Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4CAO callsign genealogy
Currently held by Jaffe, Eric C
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 KK4CAO's current licensee, walking backwards.
- Ortiz, Christopher ANCgranted 2024-09-05cancelled 2024-10-08
Successor callsigns
Callsigns held now by people who previously held KK4CAO.
All historical holders
Every license row we've seen with the callsign KK4CAO, oldest first.
- Jaffe, Eric C FL2011-05-13 → cancelled 2012-05-04
- Ortiz, Christopher A NC2024-10-08 → cancelled 2025-12-09