Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0JTK callsign genealogy
Currently held by KOELLING, BONNIE 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 W0JTK's current licensee, walking backwards.
- KOELLING, BONNIE JARgranted 2001-05-10cancelled 2004-08-06
Successor callsigns
Callsigns held now by people who previously held W0JTK.
No current licensee on record previously held this callsign.