Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB1HAM callsign genealogy
Currently held by Malinoski, William 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 WB1HAM's current licensee, walking backwards.
- Malinoski, MatthewCTgranted 2024-08-07cancelled 2024-09-17
Successor callsigns
Callsigns held now by people who previously held WB1HAM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB1HAM, oldest first.
- Malinoski, William P CT2017-03-01 → cancelled 2022-09-28
- Malinoski, Matthew CT2024-09-17 active