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Iridium Fixed Antenna Specifications -Quadrifilar Helix with Air Dielectric xThe antenna offers a full metal bracket to attach to a pipe or mast. The antenna itself sits on a metal shelf, therefore avoiding the casing being cracked if the mounting bolts are over tightened during installation or cold weather shrinking the clamp. It is a direct replacement for the Iridium OEM fixed mount antenna. I have used them since 1999 and they perform very well. The external coax connection(s) must be protected with weatherproof wrapping, like coaxial sealing tape, to insure a waterproof seal over time. The cabling to the antenna should have a loss of 3db or less. The cable we typically use is LMR400 at either 10 or 15 meters. The cable should have a strain relief at the antenna. The antenna can be mounting on a plastic pipe or at the top of a metal pipe; this will avoid any shading of the sky by the metal. |
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