Linear arm recommendations

I seek recommendations for the best value used linear tone arm under $1,000. I want to mate it to a direct drive deck on a custom plinth. I have a Technics SP 15 that may need repair. If this deck is able to be fully functional, I would use it. I would laminate maple plywood to build the deck.

I am unsure how the arm control is interlocked to the deck...i.e., how to activate & cue the arm after turning the deck on. I suppose each arm is different.

I am open to all suggestions. Thanks in advance.