The main objective of this study was to analyze the productivity and efficiency of concrete casting using a mini crane with a capacity of 200 kg as designed by the researcher, compared to using the manual method. The method used in this study is the assembly of mini cranes with a capacity of 200 kg, then field or work tests are carried out and accompanied by observations and subsequent data analysis. The results of the analysis are that using a mini-crane is more profitable compared to the manual method. The authenticity of this research is that mini-cranes are designed and made by researchers with style and models adapted to the conditions of small towns and inland areas in Indonesia, made based on Appropriate Technology not using imported materials and prioritizing scrap metal waste which is the authenticity of this research , thus our research has the principle of producing innovations and works that are useful for human life.

The purpose of this study is to analyze the wind load on the Repeater Radio Frequency (RRF) antenna tower, the wind load is viewed from an angle of 0° to the towing cable to the largest angle on the two types of antenna towers, triangle and rectangular. Both types will produce different wind loads so that we can find out which load is the biggest from a combination of wind directions. The research method is by empirical analysis, calculating the wind load alone while other loads are not counted. As a result of wind loads, the tension cable and load direction correspond to each section and then the resultant values of force and direction will arise. And finally, the force is changed to lift and the anchor will hold the force. The results; The use of triangle antenna towers is more beneficial, especially the wind load that occurs is smaller, thus the construction costs are also smaller. The lifting power of a triangle antenna anchor tower is lighter around 1393.971N or 1.393971kN than that of a square antenna anchor tower lift of around 1971.373N or 1.971373kN.