Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0QQG callsign genealogy
Currently held by O'Shea, Mark 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 KC0QQG's current licensee, walking backwards.
- O SHEA, MARK JCOgranted 1993-10-12cancelled 2003-09-04
Successor callsigns
Callsigns held now by people who previously held KC0QQG.
No current licensee on record previously held this callsign.