Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN0WS callsign genealogy
Currently held by Hasbargen, Carl 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 KN0WS's current licensee, walking backwards.
- Hasbargen, Carl LMNgranted 2010-11-09cancelled 2010-12-03
Successor callsigns
Callsigns held now by people who previously held KN0WS.
No current licensee on record previously held this callsign.