DC-BAtt is a directional coupler used to adjust transmitter power for the MFL IFB input port. It covers three RF bands: V (170–230 MHz), C (405–520 MHz), and U (470–840 MHz). Four attenuation options are available: 23 dB for 50 mW–500 mW TX, 30 dB for 0.5–2 W, 36 dB for 2–5 W, and 42 dB for 5–20 W. The module is identified by the code DC-[Band][Attenuation], enabling band- and attenuation-specific deployment in RF assemblies.