This has worked well for me, too.
73,
Steve N8NM
> My final solution was to use the W6NL coax trick.
>
> http://www.cebik.com/trans/wb.html
>
> My antenna for 80 meters are some half wave sloping dipoles from my
> 120' tower. They are cut for about 3.700 mhz I have 1 wavelength of
> RG8x cable from each antenna feed point coming back to the base of the
> tower and then I go into my Ameritron RCS8 switch box. On the output
> side of the RCS8 I have a 1/4 wavelength of 75 ohm coax and then the
> 50 ohm hardline back to the shack.
>
> The SWR on my northeast and northwest slopers looks like this in the
> shack. I have not tried to make it better or messed with it since it
> works out for me in the places I operate.
>
> NE NW
>
> 3.500 1.22 1.20
> 3.525 1.30 1.35
> 3.500 1.45 1.55
> 3.560 1.50 1.60
> 3.575 1.60 1.75
> 3.600 1.75 1.85
> 3.625 1.90 1.98
> 3.650 2.00 2.10
> 3.675 2.15 2.10
> 3.700 2.20 2.10
> 3.725 2.20 1.90
> 3.740 2.00 1.85
> 3.500 1.95 1.80
> 3.750 1.85 1.70
> 3.800 1.75 1.60
> 3.825 1.65 1.60
> 3.850 1.65 1.60
> 3.875 1.65 1.65
> 3.900 1.70 1.70
> 3.925 1.75 1.80
> 3.950 1.85 1.95
> 3.975 1.95 2.20
> 4.000 2.20 2.25
>
>
> The best part has been being able to operate in either place without
> thinking about it - now I am sure I will have to retune the amp some
> as I move from 3.600 to 3.800 but that is life I guess.
>
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