Description
The Model 253 and 250 tracking receivers provide a high-quality, cost-effective solution for converting the satellite beacon from RF or IF to a DC voltage tracking signal. The 253 is an integrated, rack-mounted (2RU) receiver chassis. The 250 is a receiver card set integral to the Model 133 ACU chassis, available with an optional block down converter.
https://www.satellitedish.com/Model-253.pdf