Nom. Loss Characteristics for Cables  
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EQUIP INDEX

(Decibels per Hundred Feet)    -    Impedance  50, 75, Other

RG/U Frequency in MHz
Cable Type 10 50 100 200 400 1,000 3,000 5,000 10,000
5, 5A, 5B .80 1.40 2.90 4.30 6.40 11.00 22.00 30.00 52.00
8, 8A, 10A, 213, 215 .66 1.50 2.20 3.20 4.60 9.00 19.00 28.00 47.00
9, 9A, 9B, 214 .66 1.50 2.20 3.20 4.60 9.00 19.00 28.00 47.00
11, 11A, 12, 12A, 13, 13A, 216 .66 1.50 2.20 3.20 4.60 9.00 19.00 28.00 --
217 .41 1.00 1.40 2.10 3.10 5.80 13.00 19.00 31.00
22, 22B 1.20 2.80 4.20 6.30 9.50 -- -- -- --
55, 55A, 55B, 223 1.35 3.00 4.30 6.00 8.80 16.50 36.00 51.00 85.00
58, 58B, 1.20 3.10 4.60 7.00 10.00 17.50 38.00 -- --
58A, 58C, 1.40 3.30 4.90 7.30 11.00 20.00 41.00 -- --
59, 59A, 59B 1.10 2.30 3.30 4.70 6.70 11.50 25.50 41.00 --
62, 62A, 71, 71A, 71B .90 1.90 2.80 3.70 5.20 8.50 18.40 29.50 --
62B, .90 2.10 3.00 4.30 6.10 10.50 23.50 36.00 --
115, 115A, 165, 225, 393 .60 1.40 2.10 3.10 4.50 7.50 14.00 21.00 35.00
108, 108A 2.30 5.20 7.50 11.00 16.00 26.20 54.00 -- --
122 1.60 4.40 6.90 11.00 16.60 29.20 57.20 89.00 --
140, 141, 141A, 142B, 302, 303, 400, 402 1.20 2.70 3.90 5.50 8.00 13.00 26.00 36.00 62.00
143, 143A, .85 1.80 2.50 3.80 5.70 9.70 18.10 26.10 40.70
144 .38 1.00 1.60 2.30 3.80 7.00 15.10 -- --
161, 179, 179A, 179B, 187, 187A 5.00 7.90 9.80 12.70 15.80 25.00 43.00 62.50 135.00
174, 174A, 3.80 6.50 8.90 12.00 17.50 31.00 64.30 97.00 185.00
178, 178A, 178B, 196, 196A 5.30 10.00 13.30 20.00 27.50 45.00 78.00 115.00 172.00
180, 180A, 180B, 195, 195A 3.10 4.20 5.10 7.30 10.40 16.50 36.00 49.50 89.00
188, 188A, 316 3.80 7.90 11.50 15.00 20.00 30.00 58.00 79.00 133.00
210 .23 .58 .85 1.30 1.90 3.10 6.50 9.00 15.00

Note: Values above 3 GHz vary considerably depending on construction.

Conditions Ambient: 20C

12 Volt DC chart - Maximum length of run in metres (5% power loss at given distances.  For 2%, divide distance by 2.5)

Amps in Wire Watts at 12V #14
2.5mm
2
#12
4mm
2
#10
6mm
2
#8
10mm
2
#6
16mm
2
#4
25mm
2
#2
35mm
2
1/0
55mm
2
2/0
70mm
2
3/0
95mm
2
1 12 25m 40m 60m 100m 160m  
2 24 10m 20m 30m 50m 90m 130m 200m  
4 48 6m 10m 15m 26m 40m 65m 100m 165m 200m  
6 72 5m 7m 10m 17m 25m 40m 70m 110m 135m 170m
8 96 3m 5m 8m 13m 20m 30m 50m 80m 100m 130m
10 120 3m 4m 7m 3m 15m 25m 40m 65m 80m 105m
15 180 2m 3m 4m 7m 10m 15m 25m 45m 55m 70m
20 240   2m 3m 5m 8m 13m 20m 30m 40m 50m
25 300     2.5m 4m 6m 10m 15m 25m 30m 40m
30 360     2m 3.5m 5m 8.5m 13m 20m 25m 35m
40 480       2.5m 4m 6m 10m 15m 20m 25m

These are one-way distances, measured from point A to point B. The out and back nature of electrical circuits has already been included.
Modified from Northern Arizona Wind and Sun Inc