Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6ZOO callsign genealogy
Currently held by Cafaro, Christopher 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 K6ZOO's current licensee, walking backwards.
- Cafaro, Christopher JCAgranted 2011-02-18cancelled 2012-07-21
Successor callsigns
Callsigns held now by people who previously held K6ZOO.
- BERNHARD, ERWIN EAZgranted 2003-10-25cancelled 2015-10-27
All historical holders
Every license row we've seen with the callsign K6ZOO, oldest first.
- BERNHARD, ERWIN E AZ1993-10-05 → cancelled 2003-10-25
- Cafaro, Christopher J CA2023-09-08 active