The base is made of plywood. The support for BNC connector and ground connection is a small steel "L" piece, wich may be found predrilled (fits also BNC!) in any hardware store.
The two wing nuts are for radials. Detail view:
The base is made of plywood. The support for BNC connector and ground connection is a small steel "L" piece, wich may be found predrilled (fits also BNC!) in any hardware store.
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