Fan Controller
The fan controller helps reduce heat build up inside the RF cage to keep those expensive sweep tubes nice and cool. Will work with just about any rig, power is stolen from the 12Vac feed.
When power is first applied, the fan turns on at full speed, then about 20 seconds later, it slows down. The high and low speed are easily adjusted with two trimmers.
The fan mounts to the end of the RF cage. I used nylon screws that will self thread into the holes of the cage. No need to remove the PA cage to install the fan.
Comes completely assembled and tested.
It's $39 + $10 shipping.