Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K8GJO callsign genealogy
Currently held by Ostrom, Gregory
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 K8GJO's current licensee, walking backwards.
- Ostrom, GregoryMIgranted 2013-01-30cancelled 2013-02-23
Successor callsigns
Callsigns held now by people who previously held K8GJO.
No current licensee on record previously held this callsign.