Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9RTB callsign genealogy
Currently held by Bartosiewicz, Randall
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 W9RTB's current licensee, walking backwards.
- Bartosiewicz, RandallILgranted 2004-12-07cancelled 2006-11-18
Successor callsigns
Callsigns held now by people who previously held W9RTB.
No current licensee on record previously held this callsign.