Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9DJK callsign genealogy
Currently held by Jennings, Dan
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 W9DJK's current licensee, walking backwards.
- Jennings, DanWIgranted 2018-06-06cancelled 2018-08-07
Successor callsigns
Callsigns held now by people who previously held W9DJK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9DJK, oldest first.
- FIRESTONE, ROBERT P IL1994-07-16 → cancelled 2006-07-18
- Jennings, Dan WI2018-08-07 active