Cable Insertion Loss = -10 * log10 * (SWR - 1 / SWR + 1)

SWR	Insertion Loss (dB)

1.05	16.3
1.1	13.2
1.2	10.4
1.3	 8.7
1.4	 7.8
1.5	 7.0
1.6	 6.4
1.7	 5.9
1.8	 5.5
1.9	 5.1
2.0	 4.8
2.5	 3.7
3.0	 3.0
3.5	 2.6
4.0	 2.2
4.5	 1.9
5.0	 1.8
6.0	 1.5
7.0	 1.2
8.0	 1.1
9.0 	 0.96
10.0	 0.88
20.0	 0.43
30.0	 0.29
40.0	 0.23