Planar Monolithics Industries Model No: SDLVA-61F-80-582987-004 Option TBRK, MS is a matched set of successive detection log video amplifiers in a compact stacked configuration. This unit operates over 61.25 MHz ± 250 KHz with a transfer function of E – 22.5 PIN+ 200, where PIN is the input power in dB above -80 dBm and E = output voltage in millivolts.