Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MSB callsign genealogy
Currently held by BRULO, MICHAEL S
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 W3MSB's current licensee, walking backwards.
- BRULO, MICHAEL SPAgranted 2008-09-24cancelled 2016-05-10
Successor callsigns
Callsigns held now by people who previously held W3MSB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3MSB, oldest first.
- BRADY, FRANK B MD1998-06-15 → cancelled 2010-06-16
- BRULO, MICHAEL S PA2026-03-24 active