Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1SZK callsign genealogy
Currently held by Kalson, Seth Z
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 W1SZK's current licensee, walking backwards.
- Kalson, Seth ZNVgranted 2008-05-20cancelled 2013-08-24
Successor callsigns
Callsigns held now by people who previously held W1SZK.
No current licensee on record previously held this callsign.