Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK6OI callsign genealogy
Currently held by CRONIN, MEDARD H
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 KK6OI's current licensee, walking backwards.
- N6WBIno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KK6OI.
- CRONIN, MEDARD HCAgranted 2024-08-08