Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9CJS callsign genealogy
Currently held by SEGLER, DOROTHY 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 K9CJS's current licensee, walking backwards.
- Sukow, Jeffrey DWIgranted 2018-04-26cancelled 2018-05-18
Successor callsigns
Callsigns held now by people who previously held K9CJS.
- Sukow, Jeffrey DWIgranted 2019-02-20
All historical holders
Every license row we've seen with the callsign K9CJS, oldest first.
- SEGLER, DOROTHY J IL2006-01-10 → cancelled 2018-04-03
- Sukow, Jeffrey D WI2018-05-18 → cancelled 2019-02-20