Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0CAQ callsign genealogy
Currently held by PETZNICK, HAL 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 K0CAQ's current licensee, walking backwards.
- PETZNICK, HAL JMOgranted 2004-07-14cancelled 2010-12-14
Successor callsigns
Callsigns held now by people who previously held K0CAQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0CAQ, oldest first.
- HANSEN, ROBERT J OK1995-04-25 → cancelled 2007-04-26
- PETZNICK, HAL J MO2010-12-14 → cancelled 2022-12-15