Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0SL callsign genealogy
Currently held by Sussman, David I
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 K0SL's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K0SL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0SL, oldest first.
- LICHTENAUER, DONALD S CA2004-06-17 → cancelled 2016-09-15
- Sussman, David I MN2026-07-29 active