Check the listing for details. RadioShack Antenna-Mounted High-Gain Signal Amplifier. Color: Black, Condition: New. Listed at 64.99 USD. Improve your TV signal strength with the RadioShack Antenna-Mounted High-Gain Signal Amplifier. This mast head amplifier is compatible with VHF bands and has a signal gain of 16dB. It features digital audio inputs and outputs with two digital coaxial RCA outputs and one input. The amplifier is suitable for use with black antennas and has a model number of 1500526. This unit quantity of one RadioShack Antenna-Mounted High-Gain Signal Amplifier is perfect for TV, video, and audio enthusiasts who want to enhance their viewing experience. The amplifier is packed with features that ensure excellent signal quality and is ideal for use in signal amplifiers and filters, TV, video and audio accessories, and consumer electronics.