Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0IKX callsign genealogy
Currently held by OBERMOLLER SR, EARL M
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 K0IKX's current licensee, walking backwards.
- Montalvo, AmberWAgranted 2019-06-18cancelled 2019-07-19
Successor callsigns
Callsigns held now by people who previously held K0IKX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0IKX, oldest first.
- OBERMOLLER SR, EARL M MN2007-04-09 → cancelled 2019-05-17
- Montalvo, Amber WA2019-07-19 active