[TowerTalk] Long Cable for Yaesu Rotor

[Earl Morse]

>-----Original Message----- 
>From: Larry K4AB
>Sent: Sunday, April 20, 2014 12:41 PM
>To: Tower and HF antenna construction topics.
>Subject: [TowerTalk] Long Cable for Yaesu Rotor
>
>Does anyone have any experience with long runs of rotor cable
>for a Yaesu G-1000?
>
>I'm planning for a run of 400' and I'm thinking that maybe too long,
>even using the heavier cable.
>
>73,
>Larry K4AB
>_______________________________________________
>

You can figure this out.

The G-1000 specs 125' maximum runs of #20 wire.  #20 is 1.015 ohms/100 ft.  That leaves you with a max resistance budget of 1.26875 ohms for 125' of #20.

If you use #18 with a resistivity of .006385 ohms /ft then you can go to 198 ft and keep the same resistivity.

If you use #16 with a resistivity of .004016 ohms /ft then you can go to 315 ft and keep the same resistivity.

If you use #14 with a resistivity of .002525 ohms /ft then you can go to 502 ft and keep the same resistivity.

It looks like you need to use #14 to make the run and meet the requirements that Yaesu specified for a 400 ft run.

Make sure that the wire you do buy has these resistivity numbers or better.  Not saying that smaller wire doesn't work, but thats not what Yaesu specified.

Earl 
N8SS