Find Cable Size

Fill out this form to find out what cable size you need.

*Length of Run: Feet
Voltage at Source: Volts
Current Draw: Amps

Cable Size Loss
Volts % of Power
2 AWG    
4 AWG    
6 AWG    
8 AWG    
10 AWG    
12 AWG    
16 AWG    
18 AWG    
22 AWG    

* Electrical length is twice this due to return path

For current draw, check you radio user manual for the maximum current draw.

Here are a few examples at 14V and on the 10M band:

Icom IC-756 Pro II 10W xmit=9A, 100W xmit=19A
Icom IC-706 10W xmit=9A, 100W xmit=20A
Yaesu FT-857D 10W xmit=6A, 100W xmit=17A


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