How to build a tilt over 6. M0. MCX the home of DX Commander. This job is not for the feint hearted. You will need a natural tendency for engineering, be accurate and be comfortable with knots. However, theres no reason that most small teams of keen amateur radio operators cant build this as a project for field day use. Let me explain how I built the one shown in the pictures, then Ill cover the learnings with you later along with my own dos and donts. Equipment. Some people mistakenly call this arrangement a gin pole tower however thats incorrect the arrangement shown in the drawing is called a falling derrick. I designed this with 3 x 6m 2. I used a section and a half again for the falling derrick, as shown in the diagram. Four guying points were required. From the bottom at the top of the lower pole, one in the middle of the centre pole and then two for the top section spaced out at 1m from the bottom 3 feet and same again at the top. I made the guy points from aluminium plate and had them sit on nylon washers that I cut out. The guy points for the middle and top sections are seated on three bolts that I drilled and tapped into the pole. VisualizeAntennaFieldStrengthMapOnEarthExample_01.png' alt='Antenna Tilt Calculator Software' title='Antenna Tilt Calculator Software' />Calculators and Tools. These calculation, configuration and design tools are provided for guidance purposes only. They are provided as is and should not be relied. TrackingSat is a Satellite Tracking Program. TrackingSat is useful to assist users that need to install your antenna and align it with the satellites in orbit. Justin. Justin Justin v. Justin Demo v. 2. Demo Project Turkey Demo Project Ruza Demo Project Mar Change log Sentinel Driver. This index page covers the antenna system, which is made up of everything from the repeater transmitter or repeater receiver antenna jack out, including duplexers. User Manual and User Guide for many equipments like mobile phones, photo cameras, motherboard, monitors, software, tv, dvd, and others. The nylon washer sit on top of these bolts, then the aluminium guy plates on top of the washer. I had the idea of placing the rotator between the two top sections and this would have worked as a temporary mast bearing. The lower guy point didnt need any drilling and tapping, it just sits on the scaffold connector. You will need to connect each vertical section together. Cheap scaffold connectors will do the job adequately. There is no bending torque on these sections, they are only to hold them steady. I made a swivel base from wood and a spare section of large diameter aluminum tubing to clip the mast into. This is permanently cross bolted through the wood with a large 1. We had the guy stakes made for us, at considerable cost and a total waste of money since you can buy these from Barenco or your preferred hardware supplier and procured the requisite amount of cheap 8mm just over quarter inch lorry rope in black. We wanted to make this a repeatable erection and therefore we used carabinas and colour coded each of the ropes for future use. Obviously, youll need a few poles tubes and have them pre drilled with the guy point bolts and eye bolts for anchor points on the falling derrick. The eye bolts on the top connect to the mast, the eye bolts on the side connect to the adjacent guy stakes and the lower eye bolt has a dual purpose it connects to the tow bar and also to the final guy stake at this connection point. Building. Firstly, it became apparent that the geometry of this tower is critical. Starting with the base hinge, measure out in 9. The base hinge needs to be secured lightly, however there should never be too much lateral pressure on the base, only downward. You will find it should stay put. We used heavy duty roofing pegs anyway. You will need to build this on very flat land. If the ground is sloping, build it so that the falling derrick is either facing away or towards the slope, not parallel to it otherwise the geometry will be impossible. The first challenge is to have the first section erected as a stand alone vertical tube. Lay the tube flat on the ground and insert into the swivel base. You will have a small spare section 1 metre of stub mast that you can use temporarily to fit on top of the first section with a scaffold connector to slip the first guying point over. You will remove this stub mast later. Attach 4 first stage guying ropes to the top of this mast section and manually hoist the mast to the vertical position. Have one or two team members hold the pole upright whilst those that are knot minded can attach this vertically to the guying stakes. Have a coffee and observe your success. Now lay the falling derrick on the ground. If youve done your geometry right, the end of this pole should be fractionally short of the guying point. Thats perfect. The falling derrick will attached to both the mast and to the adjacent guying points so that as the mast lowers, the falling derrick wont fall over sideways, so go ahead and bolt the falling derrick to the bottom of the first section by the hinge and attach the side ropes to the adjacent guy stakes. Lift the end of falling derrick so that its parallel to the ground and with a team member holding the mast section upright, disconnect the guy rope thats holding this vertical vertical and attach to the falling derrick. Gravity alone should keep the mast upright, however youll need a small connector rope in the future from the bottom of the falling derrick to the master guy point. You will be connecting and disconnecting this guy point regularly during this process, so for ease of expression, well call this the connection guy and I recommend that once this distance between the falling derrick this guy stake is accurate, fit a carabina. Vivitar Mini Camera Software. Note You need to connect a long rope to the bottom connector on the falling derrick. This is what I call the Hoist Rope and is why theres a load of blue rope always hanging around under the rig here in my pictures, its the rope I will eventually attach to my tow bar to erect the whole thing. Now take a picture since you are almost half way there. At this stage, if there are any geometric corrections to make, I suggest you do so now and make sure that the 4 major guy ropes are tensioned nicely with the falling derrick attached to the connection guy stake which will regularly need to be released and reconnected. Fitr that carabina. So, you now have section one installed with a disproportionate big falling derrick. With all hands ready then, you need to release the connection guy and have a team member pull the mast over towards them. Assuming the geometry is perfect, you will have an almost balanced see saw with the tow rope allowing the assembly to tilt over. I found that it was top light at this stage so the team member thats pulling over may need to put his weight into getting the lowering started. Installing the centre section. With section one lying n the ground, release the little stub mast from the top of section one and in its place, put in the middle 6m 2. This section should have a guy point ready in the middle of the pole. Connect 4 ropes to this guy point and lay them out to each guy point. But wait, you cant lay out the rope to the connection guy stake because the falling derrick is now vertical. So, you will need to release one of the falling derrick side ropes and gently lower the falling derrick to the ground. Be very careful now because unless you have continually secured the tow rope, the pole could crash down causing very serious injury even death. Now you can connect the fourth guying point to the end of the falling derrick, guestimating the tension to apply here. Too loose, and as you attempt to raise the mast, the will not be enough tension on the falling derrick connector and the mast will appear to banana. Too much and it may banana towards you. Trial and error required. Hoist the falling derrick back vertically again and reconnect to the side guying point. This is why we used carabinas. Reconnecting lengths of ropes with knots will give you a different tension each time but with the set and forget carabina, thats one less job to worry about. Now you are ready to lift two sections vertically. You may need the tow bar this time, alternatively two team members can probably lift this.