I think you'll be happiest with a functioning rotor. Price a new one. Might be best to just buy new and have it on hand when you get to the top. Then you don't have to rent, build, climb scaffolding twice. Or is the scaffolding idea of little interest?
This 9521 is what I have. Also available here (with coax) and elsewhere. I use a preamp, but sometimes bypass it.
This 9521 is what I have. Also available here (with coax) and elsewhere. I use a preamp, but sometimes bypass it.