Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9RGO callsign genealogy
Currently held by Oldenburg, Ross G
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 K9RGO's current licensee, walking backwards.
- Oldenburg, Ross GWIgranted 2016-01-11cancelled 2016-02-02
Successor callsigns
Callsigns held now by people who previously held K9RGO.
No current licensee on record previously held this callsign.