The amplifier supports U segment station & U section working mode in UV dual band(TG-UV2) - Ham Radio power:suitable for many transmitting power 2-7W radio - Size:12.5x8x5cm(LxWxH) Note: When transmitting, the red LED power indicator lights and when receiving, LED light off. Connection: Connect amplifier SMA female(golden connector) to radio antenna socket with RF cable. The large needle M female(amplifier) connects antenna.The red cable connects power positive pole, black cable connects power negative pole. Package List: - 1 x FM Radio Amplifier. Usually it cost about 35USD-50USD. If you receive defective item, please kindly notify us within 14 days. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "outstandingdeal" and is located in this country: CN. This item can be shipped worldwide.