Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0BIG callsign genealogy
Currently held by Oesterreicher, Jason C
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 K0BIG's current licensee, walking backwards.
- Oesterreicher, Jason CMOgranted 2005-05-16cancelled 2005-06-07
Successor callsigns
Callsigns held now by people who previously held K0BIG.
No current licensee on record previously held this callsign.