Coax loss table
RG59/U velocity factor 0.66
RG-6 or RG-6 QS (quad shield) velocity factor 0.78

    Chart courtesy of Richard Flagg

Cable length in wavelengths

RG59/U
Feet (m)

RG59/UAttenuation (dB)

RG-6 or QS
Feet (m)

RG-6 or QSAttenuation
(dB)
0.5   16.16 (4.93) 0.25 19.09 (5.82) 0.16
1 32.32 (9.85) 0.5 38.19 (11.64) 0.32
1.5 48.48 (14.78) 0.75 57.29 (17.46) 0.48
2 64.64 (19.70) 1.0 76.39 (23.28) 0.64
2.5 80.80 (24.63) 1.25 95.48 (29.10) 0.80
3 96.96 (29.55) 1.5 114.58 (34.93) 0.96
3.5 113.12 (34.48) 1.75 133.68 (40.75) 1.12
4 129.27 (39.40) 2.0 152.78 (46.57) 1.28
4.5 145.43 (44.33) 2.25 171.88 (52.39) 1.44
5 161.59 (49.25) 2.5 190.97 (58.21) 1.6
5.5 177.75 (54.18 ) 2.75 210.07 (64.03) 1.76
6 193.91 (59.18) 3.0 229.17 (69.85) 1.92
6.5     248.27 (75.67) 2.08
7     267.36 (81.49) 2.24
7.5     286.46 (87.31) 2.4
8     305.56 (93.13) 2.56
8.5     324.66 (98.96) 2.72
9     343.75 (104.78) 2.88
9.5     362.85 (110.60) 3.04

                                                              

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