Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0EIA callsign genealogy
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 K0EIA's current licensee, walking backwards.
- HAUSER, RONALD MMOgranted 2004-11-22cancelled 2007-05-30
Successor callsigns
Callsigns held now by people who previously held K0EIA.
- MALLBERG, ROGER DNDgranted 1999-04-08cancelled 2004-08-20
All historical holders
Every license row we've seen with the callsign K0EIA, oldest first.
- HAUSER, RONALD M NC2017-09-26 active
- —— → cancelled 1999-04-08