Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA7OB callsign genealogy
Currently held by O'BREMSKI, TOM J
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 WA7OB's current licensee, walking backwards.
- O'BREMSKI, TOM JWAgranted 2004-10-14cancelled 2006-01-31
Successor callsigns
Callsigns held now by people who previously held WA7OB.
No current licensee on record previously held this callsign.