PMI Model: PTB-50-1G40G-12-292FF-DC12-220VAC is a portable amplifier that operates over the 1.0 to 40.0 GHz frequency range. This model provides 50 dB of typical gain with an OP1dB of +22 dBm typical (1 to 18 GHz) and +18 dBm typical (18 to 40 GHz). This amplifier features an on/off switch that is located on the front panel. This amplifier can operate on either 220 to 230 VAC or VIA an external 12 VDC battery pack or DC voltage supply.