PMI Model No. PTB-30-0R12-5R0-20-115VAC-SFF s a portable amplifier that operates over the 0.1 to 2.0 GHz frequency range. This model provides 30 dB of gain with an OP1dB of +20 dB minimum. This amplifier features an on/off switch that is located on the front panel. This unit operates on 110 to 115 VAC and is supplied with a 6 foot long power cord.