Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6CAO callsign genealogy
Currently held by Marzec, Richard E
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 K6CAO's current licensee, walking backwards.
- Marzec, Richard ECAgranted 2005-06-29cancelled 2010-05-25
Successor callsigns
Callsigns held now by people who previously held K6CAO.
No current licensee on record previously held this callsign.