Installation Instructions
Connectors for HELIAX® FSJ4-75 Superflexible
Foam-dielectric Coaxial Cable 		Bulletin 237005A

Revision A
Description

This connector is designed for tab flaring of the outer
conductor and mounting of the inner connector to the
inner conductor of the coaxial cable. Shrink tubing is
used to seal the conductor at the clamping nut.
Tools and Materials Required for Assembly
  • Scale
  • Knife
  • File
  • Brushes
  • Plastic head mallet
  • Miniature diagonal cutter
  • Jeweler's or modelmaker's saw
  • Two wrenches: 3/4" (19 mm)
    Notice
    The installation, maintenance, or removal of antenna
    systems requires qualified, experienced personnel.
    Andrew installation instructions have been written for
    such personnel. Antenna systems should be inspected
    once a year by qualified personnel to verify proper
    installation, maintenance, and condition of equipment.


    Andrew disclaims any liability or responsibility for the
    results of improper or unsafe installation practices.
    Read the Following Instructions
    Thoroughly Before Assembly

    1. Prepare Cable. Straighten the end of the cable for
    at least 10 inches (254 mm) and saw off a short section
    so that the cable end is square. Remove the jacket
    to the dimension shown, using a straight-edged piece
    of heavy paper wrapped around the cable to guide the
    cutting knife.

    Carefully saw through the outer conductor and foam to
    the dimension shown. Make the cut shallow enough to
    avoid damaging the inner conductor. Then unscrew the
    piece of cut outer conductor from the foam and trim off
    the foam with a sharp knife. Use a file to remove copper
    burrs and a brush to remove copper particles from the foam.


    H005-1
    		• Taper the end of the inner conductor with a file for easier
    insertion into the inner connector during final assembly.

    Slide the shrink tube provided and the clamping nut onto
    the cable and position them a few inches from the cable
    end.

    2. Add Gasket and Clamping Nut. Slide the gasket onto
    the outer conductor so that it butts against the jacket.
    Apply a thin coating of silicone grease to the outer surface
    of the gasket and to the gasket contact surface in the
    clamping nut. Note: The outer threads of the clamping nut
    must be kept free of grease.

    Screw the clamping nut fully onto the outer conductor and
    over the gasket so that 1/16 inch (2 mm) of outer conductor
    protrudes from the clamping nut.

    H005-2


    3. Slit and Bend Outer Conductor. Make approximately
    10 to 12 slits in the outer conductor with miniature diagonal
    cutters to a depth of 1/16 inch (2 mm) and bend the tabs
    against the clamping nut as shown. Then lay a knife tip
    on the tabs and gently tap the knife with a mallet to flatten
    the tabs. Trim off any tabs that extend beyond the edge
    of the clamping nut. Trim the foam flush with the flattened
    tabs.

    H005-3


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