User manual YAESU G-800DXA APRS MANUAL

[. . . ] A mast alignment gauge on the rotator housing simplifies accurate mechanical alignment during installation. The handsome desktop controller matches the design of modern transceivers, providing 360° radial indication of actual antenna bearing azimuth. The operator may select the stopper heading (the bearing through which the rotator cannot be turned) most convenient for his location and operation, allowing full rotation through north, south or both, if desired. In any case, 90° overlapping rotation allows rotation through the selected stopper heading (450° total rotation). The rotator is intended for mounting inside a support tower (not supplied), at least 1 meter from the top, with an optional (Yaesu model GS-065 or GS-680U) thrust bearing above. [. . . ] Ft 13 14 15 16 17 18 m2 1. 208 1. 301 1. 396 1. 486 1. 579 1. 672 Sq. Ft 19 20 21 22 ­ ­ m2 1. 765 1. 858 1. 951 2. 044 ­ ­ Page 4 G-800DXA/G-1000SA User Manual Control Cable Installation Before installing the rotator, mast, and antenna, prepare the rotator control cable and test rotator system performance on the ground. Potential alignment, cabling, or other problems can quickly be resolved on the ground; once a rotator is mounted, however, troubleshooting may require that the tower be climbed and/or the rotator be removed and lowered to the ground! CONTROL CABLE PREPARATION In this Rotator, the user must supply and prepare the control cable, per the simple instructions below. The control cable to be used should have six stranded conductors of at least 0. 5 mm (#20 AWG) diameter if the cable is shorter than 40 m in length (125'); if the cable is longer than 40 m, use conductors with a diameter of 0. 75 mm (#18 AWG) or larger. Disassemble the supplied round plug: slide off the rubber boot, remove the setscrew from the shell using a small screwdriver, then unscrew the shell from the plug. Save the setscrew in a safe place until step 10, so you don't lose it. Slide the rubber boot and the round shell over the "rotator" end of the cable. Leave enough cable protruding to allow easy dressing the end of the cable. Using special care to avoid nicking the insulation of the individual wires, strip back 15 mm (about 5/8") of the outer jacket of the cable from both ends. Now strip 5 mm (about 3/16") of insulation from each wire, being careful not to nick the conductors. Solder the wires to the round plug pins, noting the color of the wire and the number associated with each pin for reference later. Grasp the edge of the bezel around the bearing window, Bezel turn it 10° counter-clockwise, and pull it off. Note the position of the needle, then grasp it at its center, and pull it straight off. Determine which compass direction you desire to be upmost, and install the compass heading label sheet against the azimuth scale, so that the small teeth in the edges of the sheet lock around the edge. Dial Heading Sheet Replace the needle and bezel in the same direction as they were before (see diagram at the right). G-800DXA/G-1000SA User Manual Page 7 Mounting the Rotator and Antenna INSTALLATION OF THE ROTATOR AND ANTENNA ON TOWER Important!!Before mounting the mast to the rotator, a single hole must be drilled through the bottom of the mast to accommodate an anti-twist support bolt used in the base support clamp halves. Drill a 9 mm diameter hole through both walls of the mast, centered 50 mm from the mast bottom (see Figure 1). Ensure the drill is maintained perpendicular and centered when making the holes, to ensure proper alignment of the holes in the mast with those in the base support clamp. Attach the rotator to the tower's rotator mounting plate, using the supplied M8 x 16 bolts and spring washers. It is recommended that the tips of the bolts be lightly dipped in lubricating grease, to ease disassembly in the future (see Figure 2). If a thrust bearing (such as the optional Yaesu model GS-065) is to be utilized, mount it on the top of the tower (see Figure 3) using the supplied hardware. Partly tighten the mast clamp to the rotator housing using the supplied M8 x 25 bolts , spring washers and flat washers (see Figure 5). [. . . ] Secure the coax to the tower, using electrical tape and/or UV-resistant cable ties. If you have scratched through the melamine coating of the rotator during installation, you may wish to apply several coats of clear acrylic spray to help protect the bare metal from corrosion. After installation is complete, test the system by operating the rotator through the entire range of its rotation. It is helpful to do so with the help of an observer, so that rotation can be stopped if some obstruction, binding, or tension on the coaxial cable's turning loop should be encountered during the performance test. Installation Note If using a roof tower with a long mast between the top of the tower and the antenna, the use of a "Guy Bearing" is highly recommended. [. . . ]