Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KU3Z callsign genealogy
Currently held by LAMB, WILLIE N
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 KU3Z's current licensee, walking backwards.
- LAMB, WILLIE NMDgranted 2003-05-28cancelled 2008-04-18
- N3PYOno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KU3Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KU3Z, oldest first.
- GRZESIK, JOSEPH MD1994-07-21 → cancelled 2003-05-02
- LAMB, WILLIE N MD2018-03-29 active