If your antenna is in a challenging area, this ANT0104 1-in-4 Indoor Amplifier from Digiwave easily transmits a signal that is both crisp and clear! The Digiwave ANT0104 helps to enhance the performance of all passive antennas. It is specifically engineered for digital signals but it also supports analog signals and it optimizes signal for the best possible reception through improved gain. In addition, this amplifier preserves signal purity with Extremely Low-Noise (ELN) circuitry.