Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3RBH callsign genealogy
Currently held by Callan, Matthew D
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 W3RBH's current licensee, walking backwards.
- Callan, Matthew DPAgranted 2019-09-30cancelled 2020-01-28
Successor callsigns
Callsigns held now by people who previously held W3RBH.
No current licensee on record previously held this callsign.