Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1KJO callsign genealogy
Currently held by O'Sullivan, Kevin 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 W1KJO's current licensee, walking backwards.
- O'Sullivan, Kevin JNHgranted 2009-05-19cancelled 2016-06-10
Successor callsigns
Callsigns held now by people who previously held W1KJO.
No current licensee on record previously held this callsign.