Contemporary Research QDA4-45 RF Distribution Amplifier & Combiner Pyle Pro PLPTS2 no batteries or power are

no batteries or power are required

For 3181/82/85/86/90/and 3193 Series

1/4"-20 x 1/4" socket cap

A circular cleaning sponge

4 x 1/4"-20 x 1-1/4" Hex Bolt

Contemporary Research QDA4-45 RF Distribution Amplifier & Combiner Pyle Pro PLPTS2 no batteries or power areThe Contemporary Research QDA4 45 is an amplified RF combiner that can switch between one or four inputs, with adjustable amplification up to 50 dBmV. You can add up to 32 dBmV gain for one input, and 25 dB for four inputs. Designed for QMOD HDTV applications, the unit can receive an RF feed from QMOD modulators or QCA9 33 active combiners. Inputs can be switched between one or four inputs, with selectable gain. This compact unit mounts two across in