Kramer Electronics 104R 104R is a high performance distribution amplifier for RF signals. It takes one RF (CATV/MATV) signal and distributes it to four identical outputs. High Bandwidth - 3000MHz. RF Gain - + 6dB across band. Compact Kramer TOOLS - 3 units can be rack mounted side-by-side in a 1U rack space with the optional RK-3T rack.