Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM1SB callsign genealogy
Currently held by GREENBERG, MAURY 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 WM1SB's current licensee, walking backwards.
- GREENBERG, MAURY JNYgranted 2020-08-15
Successor callsigns
Callsigns held now by people who previously held WM1SB.
- GREENBERG, MAURY JNYgranted 2020-08-15