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- AMATEUR RADIO LICENSE SEARCH
Callsign: K4RB
Class: Extra
Name: BLUMBERG, ROBERT G
City: Cardiff by the Sea
State: CA
Zipcode: 92007
Status: Active
Grant Date: 08/16/2016
Expires: 11/04/2026
Uls: FCC Info
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Ham Callsigns search - version 2.1
