The RTLWB-4-500 from Radar Technology is a DLVA with Frequency 400 to 600 MHz, Dynamic Range 60 dB, Input Power -60 to 0 dBm, Supply Voltage 15 VDC, Operating Temperature -30 to 71 Degree C. Tags: Module with Connector, DLVA. More details for RTLWB-4-500 can be seen below.