Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4BAT callsign genealogy
Currently held by Durfee, Aaron 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 KM4BAT's current licensee, walking backwards.
- Layne, Betty JTNgranted 2016-06-22cancelled 2016-07-12
Successor callsigns
Callsigns held now by people who previously held KM4BAT.
- Durfee, Aaron SFLgranted 2014-06-03cancelled 2026-06-04
All historical holders
Every license row we've seen with the callsign KM4BAT, oldest first.
- Durfee, Aaron S FL2014-05-08 → cancelled 2014-06-03
- Layne, Betty J TN2026-05-29 active