Coax Cable Signal Loss (Attenuation) in dB per 100ft* |
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| Loss* | RG-174 |
RG-58 |
RG-8X |
RG-213 |
RG-6 |
RG-11 |
RF-9914 |
RF-9913 |
| 1MHz | 1.9dB |
0.4dB |
0.5dB |
0.2dB |
0.2dB |
0.2dB |
0.3dB |
0.2dB |
| 10MHz | 3.3dB |
1.4dB |
1.0dB |
0.6dB |
0.6dB |
0.4dB |
0.5dB |
0.4dB |
| 50MHz | 6.6dB |
3.3dB |
2.5dB |
1.6dB |
1.4dB |
1.0dB |
1.1dB |
0.9dB |
| 100MHz | 8.9dB |
4.9dB |
3.6dB |
2.2dB |
2.0dB |
1.6dB |
1.5dB |
1.4dB |
| 200MHz | 11.9dB |
7.3dB |
5.4dB |
3.3dB |
2.8dB |
2.3dB |
2.0dB |
1.8dB |
| 400MHz | 17.3dB |
11.2dB |
7.9dB |
4.8dB |
4.3dB |
3.5dB |
2.9dB |
2.6dB |
| 700MHz | 26.0dB |
16.9dB |
11.0dB |
6.6dB |
5.6dB |
4.7dB |
3.8dB |
3.6dB |
| 900MHz | 27.9 B |
20.1dB |
12.6dB |
7.7dB |
6.0dB |
5.4dB |
4.9dB |
4.2dB |
| 1GHz | 32.0dB |
21.5dB |
13.5dB |
8.3dB |
6.1dB |
5.6dB |
5.3dB |
4.5dB |
| Imped | 50ohm |
50ohm |
50ohm |
50ohm |
75ohm |
75ohm |
50ohm |
50ohm |
| * Note: Coax losses shown above are for 100 feet lengths. Loss is a length multiplier, so a 200 ft length would have twice the loss shown above and a 50 ft length would have half the loss. This multiplier factor is why you should keep cable installation lengths between radios and antennas as short as practical! | ||||||||