Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0JDO callsign genealogy
Currently held by Oelke, Johannes
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 K0JDO's current licensee, walking backwards.
- Oelke, JohannesMOgranted 2004-05-19cancelled 2004-07-20
Successor callsigns
Callsigns held now by people who previously held K0JDO.
No current licensee on record previously held this callsign.