AT&T (Formerly DIRECTV) 21 Volt Power Inserter for All DIRECTV SWM LNBs (PI21) Technical Information - Frequency Range - 2000 kHz to 2150 MHz; Signal Loss - 2 dB - Insertion; Input Voltage Range - 100 V AC to 120 V AC; Interfaces/Ports - Ports - F-type Technical Information - Frequency Range - 2000 kHz to 2150 MHz; Signal Loss - 2 dB - Insertion; Input Voltage Range - 100 V AC to 120 V AC; Interfaces/Ports - Ports - F-type Technical Information - Frequency Range - 2000 kHz to 2150 MHz; Signal Loss - 2 dB - Insertion; Input Voltage Range - 100 V AC to 120 V AC; Interfaces/Ports - Ports - F-type