The RTL-6-4510 from Radar Technology is a DLVA with Frequency 40 to 50 MHz, Dynamic Range 80 dB, Input Power -80 to 0 dBm, Supply Voltage 15 VDC, Operating Temperature -30 to 71 Degree C. Tags: PCB Mount, DLVA. More details for RTL-6-4510 can be seen below.