Overview

DX Engineering Mast Top Mounting Plate

DX Engineering Mast Top Mounting Plate DXE-MTMP is a multi-purpose 16 x 5.1 inch (406.4 x 129.5mm) aluminum plate, 0.25 inch (6.35mm) thick, with a long edge flange bend 1.5 inch (38mm) deep for reinforcement. It is drilled for specific DX Engineering Stainless Steel V-Bolt Saddle Clamps and U-Bolt Saddle Clamps. A total of four clamps are required, which are sold separately for flexibility. This versatile, rugged plate and the optional clamps combine to add a strong extension mast above and in line with the original larger mast. This plate makes it easy to add a mast top antenna, electronic device or a strut tube for a boom support truss above a directional antenna. The DXE-MTMP mounts a smaller, short piece of tubing with a 1.000 to 1.500 inch (25.4 to 38.1mm) OD (outside diameter) above a larger mast or mounting tubing or pipe of either 1.00 to 2.00 inch (25.4 to 50.8mm) OR 2.375 to 3.000 inch (60.3 to 76.2mm) OD.

This is the mounting plate now supplied with the DX Engineering XB-5 Hex Beam HF Antenna, DXE-XB-5-MMK. The DXE-MTMP can be used to remount an existing Hex Beam, and it is sold here separately for alternative clamp choices.

As shown in the images, the DXE-MTMP reinforced plate has two pairs of upper holes with 6 in. (152.4mm) vertical spacing to use either of these DX Engineering Saddle Clamps:
Two DXE-SSVC-150P for an upper steel mast mounting a range of 1.00 to 1.50 in. (25.4 to 38.1mm) OD, OR
Two DXE-SAD-150A for aluminum or steel tubing that is exactly 1.500 in. (38.1mm) OD.

Two lower pairs of holes also have 6 in. (152.4mm) vertical spacing. Use either of these V-Bolt Saddle Clamps:
Two DXE-SSVC-2P for a 1.00 to 2.00 in. (25.4 to 50.8mm) OD steel mast, OR
Two DXE-CAVS-2P for 1.00 to 2.00 in. (25.4 to 50.8mm) OD aluminum mast, OR
Two DXE-SSVC-3P for a 2.375 to 3.000 in. (60.3 to 76.2mm) OD steel mast.

Each mast requires about 8 in. (~200mm) of clamping length. Internal reinforcement of aluminum tubing or double wall thickness is encouraged.

NOTICE: A total of FOUR DX Engineering Saddle Clamps are required, two for each steel or aluminum mast tubing or pipe. Other brand general hardware u-bolts will not fit this plate. Holes are drilled for the specified DX Engineering Saddle Clamps only. The user is responsible for appropriate and safe mechanical installation. No data is available for loading strength or suitability of use.

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