Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9JKS callsign genealogy
Currently held by Sullivan, John K
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 W9JKS's current licensee, walking backwards.
- Sullivan, John KILgranted 2026-06-16cancelled 2026-07-07
Successor callsigns
Callsigns held now by people who previously held W9JKS.
No current licensee on record previously held this callsign.