The AV-130 series of AC-coupled miniature amplifiers is intended for amplifying nanosecond pulses and CW signals in the frequency range of 1.0 MHz to 4000 MHz.Model AV-131B provide gains of 30 dB and 40 dB with noise figures of 1.7 dB and 3.0 dB respectively.Models with the -PS suffix come in a larger bench-top instrument format, and operate from 100-240V, 50-60 Hz prime power.