Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR1F callsign genealogy
Currently held by GOODNOW, MALCOLM F
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 KR1F's current licensee, walking backwards.
- Willis, Grant RMAgranted 2025-05-13cancelled 2025-05-31
Successor callsigns
Callsigns held now by people who previously held KR1F.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR1F, oldest first.
- GOODNOW, MALCOLM F ME2013-04-12 → cancelled 2025-05-13
- Willis, Grant R MA2025-05-31 active