The output connector of the amplifier is a SMA connector, and the input is a MMBX connector. A MMCX connector goes to output direct coupler. A Pluto SDR can drive this amplifier working at the desired band with no modifications needed. Added Note: This AP comes with a baseplate with uniform heat at the bottom and an aluminum shielding cavity processed by CNC. The appearance has scratches and the bottom coating is partially peeled off.However, the PCB is guaranteed to be flawless, and 100% will be delivered after energized gain measurement and power test. Warning: Do not invert the main power supply. The 5V port requires 500mA current, and do not exceed the 6V voltage. Otherwise it will be damaged. The tracking order number can be found here. The item "Ham Radio Es'Hail 2 QO-100 13cm 2400MHz S-Band 20W Power Amplifier DIY" is in sale since Monday, December 20, 2021. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "zhaofengzf163-3" and is located in . This item can be shipped worldwide.