Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KW4RF callsign genealogy
Currently held by SETLIFFE, JOHN W
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 KW4RF's current licensee, walking backwards.
- SETLIFFE, JOHN WFLgranted 2021-10-30
Successor callsigns
Callsigns held now by people who previously held KW4RF.
- SETLIFFE, JOHN WFLgranted 2021-10-30
All historical holders
Every license row we've seen with the callsign KW4RF, oldest first.
- 4RF.ORG AMATEUR RADIO CLUB ME2007-03-17 → cancelled 2019-03-19
- SETLIFFE, JOHN W FL2020-01-17 → cancelled 2021-10-30