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. If you receive defective item, please kindly notify us within 14 days. The item "400MHz-470MHz 45W UHF Ham Radio Power Amplifier for Interphone Car Radio xs90+" is in sale since Thursday, October 8, 2020. This item is in the category "Business & Industrie\Elektronik & Messtechnik\Elektronische Komponenten & Halbleiter\Halbleiter & Aktive Elemente\Platinen & Entwicklungskits". The seller is "xtesco" and is located in Shenzhen. This item can be shipped worldwide.