Designed specifically to improve the performance of outdoor antennas in low signal strength areas Switchable FM trap reduces interference from FM frequencies REFER TO ALL THE RELEVANT DOCUMENTS BELOW BEFORE USE. Preamplifier for outdoor antennas extends range in low signal strength areas RCA's advanced SmartBoostTM technology amplifies weak signals to deliver the most channels possible Optimizes performance with separate UHF/VHF amplification Switchable FM trap to prevent interference from FM signals Use in all difficult reception areas. VHF gain: 16dB, UHF gain: 22dB, Intermodulation: Avg>60dB Designed and engineered in the USA ** VERY IMPORTANT**DISCLAIMER: Reception quality and channels received will depend on distance from towers, broadcast power, terrain and other factors. Hence kindly refer the User Manual before use. RCA TVPRAMP1R Outdoor Antenna Preamplifier, Designed specifically to improve the performance of outdoor antennas in low signal strength areas. Weight capacity 200 lbs.