[CQ-Contest] Where will NAQP SSB be?

Steve murphys at comcast.net
Mon Jan 8 15:39:23 EST 2007


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.
> 



More information about the CQ-Contest mailing list