Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4ISI callsign genealogy
Currently held by McRoy, James P
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 KI4ISI's current licensee, walking backwards.
- McRoy, James PKYgranted 2004-09-16cancelled 2005-02-11
Successor callsigns
Callsigns held now by people who previously held KI4ISI.
- McRoy, James PKYgranted 2016-08-26