The Noratel FR78B-23024 is a 2U rack-mounted filter module used in filter banks. It is designed to be used in conjunction with Noratel TFE filter modules, and can house up to 24 filters. The filter module has two 10 MHz coaxial ports for connecting a filter to the RF source, and two 50 O SMA ports for connecting the filter to a transmitter or receiver. The FR78B-23024 requires a 12V DC power supply for operation.