Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9OB callsign genealogy
Currently held by GRESSICK, JEFFREY A
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 K9OB's current licensee, walking backwards.
- GRESSICK, JEFFREY AILgranted 1999-03-26cancelled 2000-06-27
Successor callsigns
Callsigns held now by people who previously held K9OB.
No current licensee on record previously held this callsign.