Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JSK callsign genealogy
Currently held by KOVAL, 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 K4JSK's current licensee, walking backwards.
- KOVAL, JOHN SNCgranted 2019-10-04cancelled 2019-10-25
Successor callsigns
Callsigns held now by people who previously held K4JSK.
No current licensee on record previously held this callsign.