V
VK3YNV
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Thanks to Stevo for the 3M C-Band dish which I picked up a few weeks back, the next phase of the project is to sort out a suitable AZ-EL mount, Wayne VK3GMV had some AZ-EL mounts that were originally used as part of the Channel 7 Outside Broadcast system.
They are about 50 kG and look prettty solidly built. 110V DC motors with a gear box, with planetary reduction and worm drive to brass main gear, geared feedback pots, the motors have separate field windings rather than permanent magnets.
There are also some stick on heater pads, I guess for keeping ice and condensation to a minimum for cold environments.
Next task is to trace the circuits, but I was able to drive the AZ motor directly with 30V from a current limited lab supply.
They are about 50 kG and look prettty solidly built. 110V DC motors with a gear box, with planetary reduction and worm drive to brass main gear, geared feedback pots, the motors have separate field windings rather than permanent magnets.
There are also some stick on heater pads, I guess for keeping ice and condensation to a minimum for cold environments.
Next task is to trace the circuits, but I was able to drive the AZ motor directly with 30V from a current limited lab supply.
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