Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MWB callsign genealogy
Currently held by CASANO, JOHN 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 W4MWB's current licensee, walking backwards.
- Bowling, MichaelKYgranted 2026-03-21cancelled 2026-04-10
Successor callsigns
Callsigns held now by people who previously held W4MWB.
- CASANO, JOHN JNYgranted 2020-02-01
All historical holders
Every license row we've seen with the callsign W4MWB, oldest first.
- CASANO, JOHN J SC2010-05-18 → cancelled 2020-02-01
- Bowling, Michael KY2026-04-10 active