Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ELF callsign genealogy
Currently held by Elfstrom, Landon L
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 K0ELF's current licensee, walking backwards.
- Helmeste, MichaelWYgranted 2022-08-03cancelled 2024-03-26
Successor callsigns
Callsigns held now by people who previously held K0ELF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0ELF, oldest first.
- Elfstrom, Landon L MN2009-05-16 → cancelled 2021-05-18
- Helmeste, Michael WY2024-03-26 active