Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MPB callsign genealogy
Currently held by BIELECKI, MICHAEL P
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 W1MPB's current licensee, walking backwards.
- BIELECKI, MICHAEL Pcancelled 1999-01-13
Successor callsigns
Callsigns held now by people who previously held W1MPB.
- Bielecki, Michael PMEgranted 2001-10-23cancelled 2008-01-29