Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3RBX callsign genealogy
Currently held by Black, John R
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 W3RBX's current licensee, walking backwards.
- Black, John RPAgranted 2010-02-02cancelled 2010-03-06
Successor callsigns
Callsigns held now by people who previously held W3RBX.
- Black, John RFLgranted 2019-09-24