ance: 50 ohm and matching network Minimum Typical Center Frequency Insertion Loss 1dB Bandwidth 3dB Bandwidth 40dB Bandwidth Amplitude Ripple (Fo +/- 3.7 MHz) Group Delay Variation (Fo +/- 3.7 MHz) Absolute Delay Relative Attenuation 30.00 MHz~65.39 MHz 65.39MHz ~65.59MHz 74.41MHz ~74.61MHz 74.61MHz.