Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5JSK callsign genealogy
Currently held by Kochan, John S
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 W5JSK's current licensee, walking backwards.
- Kochan, John STXgranted 2013-03-28cancelled 2016-04-08
Successor callsigns
Callsigns held now by people who previously held W5JSK.
No current licensee on record previously held this callsign.