Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9JQK callsign genealogy
Currently held by CEDERBORG, KENNETH E
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 N9JQK's current licensee, walking backwards.
- HEIEN, THOMAS CCOgranted 2000-05-17cancelled 2010-03-02
- KB9DOEno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held N9JQK.
- HEIEN, THOMAS CMNgranted 2022-12-17
All historical holders
Every license row we've seen with the callsign N9JQK, oldest first.
- CEDERBORG, KENNETH E IL1990-05-22 → cancelled 2002-05-23
- HEIEN, THOMAS C TX2019-12-10 → cancelled 2022-12-17