Solid SF-252 Digital Satellite dB Meter (Dish Antenna Gain Measuring Instrument) Support all DTH and free-to-air and paid satellite TV signals. So you can easily set your dish / DTH antenna without calling DTH Installer. It is a must-have tool for every TV viewer because you can set your dish antenna by yourself. It is a very easy task not much technical background is required. Model No. SF-252 Specifications : Input Frequency: 950~2150MHz Input level min. : -65dBm Output level max. : -15dBm Input impedance: 75Ohm, F-connector Output Impedance: 75Ohm, F-connector Power Supply: DC 13-18V Operating Range (LNB Gain) : 52~60dB