Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K8EFI callsign genealogy
Currently held by HEAD, LOUIS V
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 K8EFI's current licensee, walking backwards.
- Allstatter, Rachael COHgranted 2016-05-16cancelled 2017-05-23
Successor callsigns
Callsigns held now by people who previously held K8EFI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8EFI, oldest first.
- HEAD, LOUIS V MI1998-05-18 → cancelled 2010-05-19
- Allstatter, Rachael C OH2017-05-23 active