Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0KLS callsign genealogy
Currently held by Steinhoff, Ken 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 K0KLS's current licensee, walking backwards.
- Steinhoff, Ken LFLgranted 2001-05-03cancelled 2001-05-25
Successor callsigns
Callsigns held now by people who previously held K0KLS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0KLS, oldest first.
- SIRHEIM, ARLEIGH T MN1988-05-24 → cancelled 2000-05-25
- Steinhoff, Ken L FL2021-08-10 active