This 3-piece system consists of a base, and two brackets - one for when the antenna is deployed, and one for when the antenna is stowed.
The antenna base/bottom swivel mount has a stud going through it. One inch Morad antennas and antenna extensions have a hole drilled through the bottom to enable passage for the stud. The base swivels to provide double swivel action for deck or bulkhead mounting.
• Upper bulkhead standoff, with latch bar, for easy one-hand removal and lay-down of antenna
• Upper J hook holds antenna when it is laid down for stowage
• Mounting hole spacing for bottom and upper mounts: 3-3/8" center-to-center
• For 1" diameter base tubes