Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4SH callsign genealogy
Currently held by CAIN, JOHN 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 KI4SH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KI4SH.
No current licensee on record previously held this callsign.