T-Pad Attenuator Values Loss R1 R2 ohms ohms 0 dB 0.00 Infinity 0.1 dB 0.432 6514 1 dB 4.31 650 5 dB 21.01 123.4 10 dB 38.96 52.70 15 dB 52.35 27.55 19 dB 59.87 17.04 19.9 dB 61.22 15.33 20 dB 61.36 15.15