Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0ZQO callsign genealogy
Currently held by Merkling, John R
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 KC0ZQO'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 KC0ZQO.
- Merkling, John RCOgranted 2007-02-26cancelled 2008-05-20