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- AMATEUR RADIO LICENSE SEARCH
Callsign: KP4GR
Class: Extra
Name: MONTALVO CASTRO, NORBERTO
City: LAS MARIAS
State: PR
Zipcode: 00670
Status: Active
Grant Date: 03/24/2023
Expires: 03/24/2033
Uls: FCC Info
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Ham Callsigns search - version 2.1
