Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9JAK callsign genealogy
Currently held by SEYMOUR, WALTER A
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 K9JAK's current licensee, walking backwards.
- DePue, Jennifer LMIgranted 2006-11-14cancelled 2008-09-30
Successor callsigns
Callsigns held now by people who previously held K9JAK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9JAK, oldest first.
- SEYMOUR, WALTER A IL1993-09-21 → cancelled 2005-09-22
- DePue, Jennifer L NE2018-11-14 active