RF Bridge 300kHz-6GHz, 50Ohm The Agilent (now Keysight) 86205A high directivity 50 ohm RF bridge offers unparalleled performance in a variety of general-purpose applications. It is ideal for accurate reflection measurements and signal leveling applications. Features: Frequency range: 300 kHz to 6 GHz Coupling factor: 16 dB + 0.15 dB/GHz (< 3 GHz), 16.5 dB - 0.20 dB/GHz (> 6 GHz) Directivity: 30 dB to 0.3 MHz, 40 dB to 2 GHz, 30 dB to 3 GHz, 20 dB to 5 GHz, 16 dB to 6 GHz Return loss: 23 dB to 2 GHz, 20 dB to 3 GHz, 18 dB to 5 GHz, 16 dB to 6 GHz Insertion loss: 1.5 dB + 0.1 dB/GHz