The RTL-4-12040 from Radar Technology is a DLVA with Frequency 100 to 140 MHz, Dynamic Range 70 dB, Input Power -70 to 0 dBm, Supply Voltage 15 VDC, Operating Temperature -30 to 71 Degree C. Tags: Module with Connector, DLVA. More details for RTL-4-12040 can be seen below.