Confidence: Medium · Source: FCC ULS · As of 2026-09-15
KR4SIS callsign genealogy
Currently held by Turner, Mary M
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 KR4SIS's current licensee, walking backwards.
- Turner, Mary MALgranted 2025-04-29cancelled 2025-06-21
Successor callsigns
Callsigns held now by people who previously held KR4SIS.
No current licensee on record previously held this callsign.