Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM3Y callsign genealogy
Currently held by Heinz, Robert E
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 WM3Y's current licensee, walking backwards.
- Heinz, Robert EMNgranted 2005-06-09cancelled 2009-11-10
Successor callsigns
Callsigns held now by people who previously held WM3Y.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WM3Y, oldest first.
- ZACHARIASEWYCZ, ADRIAN Y PA1991-04-30 → cancelled 2003-05-01
- Heinz, Robert E MN2020-12-08 active