PMI Model No. PTB-27-0R1G6G-26-SFF-DC12-220VAC is a Portable Amplifier that operates over the 0.1 to 6.0 GHz, frequency range. This amplifier provides 27 dB of gain typically with a minimum OP1dB of +26 dBm. This amplifier features an on/off switch that is located on the front panel and can operate on either 220 to 230 VAC or via an external 12 VDC battery pack for DC voltage supply.