Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4IDW callsign genealogy
Currently held by SAYRE, JAMES 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 KR4IDW's current licensee, walking backwards.
- SAYRE, JAMES SKYgranted 2022-04-11cancelled 2025-12-10
Successor callsigns
Callsigns held now by people who previously held KR4IDW.
No current licensee on record previously held this callsign.