Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9SLN callsign genealogy
Currently held by Nordbrock, Steven L
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 K9SLN's current licensee, walking backwards.
- BADDERS, JEFFREY SINgranted 2014-07-15cancelled 2019-08-23
Successor callsigns
Callsigns held now by people who previously held K9SLN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9SLN, oldest first.
- Nordbrock, Steven L CA2007-08-04 → cancelled 2019-08-06
- BADDERS, JEFFREY S IN2019-08-23 active