My Yaesu 5400 rotor seems to have lost its mine. The meter elevation worked just fine but the data sent from the computer was telling the rotor where to go but it did not go there. I use a Fox Delta controller with this rotor.

Years ago I had a similar problem. A friend of mine who was a RF engineer for GE here in Lynchburg replaced the pot in the rotor box and for the last 20 or so years it has worked flawlessly. My friend has passed away since then. He passed along a bit of wisdom way back then. He said when you order the pot from Yaesu besure and get extra. Well I ordered 3. So I still have one to install.

I have mounted the pot and resembled the rotor box. I am prepared to connect the rotor and see how it goes. Before I do that I wonder if there is a calibration I need to do before I calibrate the Fox Delta controller to the box. I have many files that I have saved from the Amsat-BB over the years concerning repairing the rotor and the box but I don't have any that reference any calibration of the replaced pot.

Would someone with experience please give me some assistance..

Thanks <<John N4QWF