What is "very heavy"? I weighed the dish petals on the Prodelin.
I think most
actuator or dish moving problems are in the dish system and not in the positioner or power supply. I spent a lot of time and money getting my Prodelin to move the way I want it to move. The old
actuator worked, but the screw was rusted, which would cause the dish to bounce or jerk at some points in the arc. Then you need decent cabling to feed the power to the
actuator, and you need shielded sensor wiring.
Using large wire like 10 guage to feed the actuator is not practical because the lugs on the positioner will not accept a wire that size, so I use the largest wire that will fit in the positioner properly.
For the satellite dishes, there are two grades of
actuator from the Venture company. One grade requires 3.5 amps at 36 volts dc (max), and the larger actuators require 5 amps at 36 volts dc (max). The Venture engineer will tell you these actuators will run at a lesser voltage, but will have reduced performance. You need a big burst of energy to move a heavy dish (100-200Kg dish petal weight) from a low spot in the arc at start-up. Most of our dishes do not weigh this much, so we can use any type of positioner. Commercial dishes such as the Prodelin will be made of a heavier material.
I uploaded some more pictures which includes the Pauxis lnb that is on my C band Prodelin now. I spent a lot of time a few years ago on positioner power supplies to move this c band dish, and modified both Gbox and Vbox with the same power supply design. The ASC1 is best suited in my opinon for moving a large dish, and has the best build of any consumer positioner. The ASC1 also has the most features of any consumer positioner.