Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4OBL callsign genealogy
Currently held by ROSSI SR, STEPHEN 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 K4OBL's current licensee, walking backwards.
- ROSSI SR, STEPHEN GFLgranted 2010-03-05cancelled 2017-12-27
Successor callsigns
Callsigns held now by people who previously held K4OBL.
No current licensee on record previously held this callsign.