Coax Loss Specifications

Coax Cable is available through many different vendors in several 50 & 75 ohm types. Recommended coax types for several Coax Applications are also provided. The Insertion Loss chart is provided below for coax cable comparisons. Remember the higher the frequency, the more signal you lose for any cable type, so keep your cable lengths as short as possible!

Coax Cable Signal Loss (Attenuation) in dB per 100ft*

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

17.3 B

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!