Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ5OSU callsign genealogy
Currently held by Grant, Adam
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 KJ5OSU's current licensee, walking backwards.
- Grant, AdamTXgranted 2024-04-11cancelled 2024-05-11
Successor callsigns
Callsigns held now by people who previously held KJ5OSU.
No current licensee on record previously held this callsign.