1Good wiring and heat sink design to maintain longterm stability and good heat dissipation. 2Broadband RF lowpower amplifier, suitable for 144MHz (130180MHz) radio transmitter learning and use. 3Easy to use, no particularly complicated operation is required, the installation of this amplifier is very simple. 4Suitable for all kinds of 380450MHz transmission use, such as radio frequency remote control, radio and other transmission use. 5Input 0.1W (20dBm) can output 5.0W 7.2V power, with high gain and efficiency, especially suitable for small power amplifiers. Item Type: Power Amplifier Commodity Material: Printed Circuit Board Working Frequency: 130-180MHz Input Power: 0.1W (20dBm) Maximum Output:2.5W (34dBm) 5.0V Power Supply 5.0W (37dBm) 7.2V Power Supply 8.0W (39dBm) 10.0V Power Supply (Not Recommended)) Working Voltage: DC5-7.2V Working Current: 1-2A (Determined by Output Power) RF Connector: Standard SMA Female Size: Approx. 50 x 50 x 15mm / 2.0 x 2.0 x 0.6in 1 xPowerAmplifierBefore using the RF amplifier module, please make sure that all instruments and equipment share the same ground (no storage) (in the potential difference), and then connect with the RF cable. The load must be connected, and noload use is strictly prohibited. Pay attention, especially the amplifier. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store