At 12:18 PM 12/18/2006, Rick Karlquist wrote:
>Stone, Gary R. wrote:
> > Greetings,
> >
> > ALSO - how about the unit being sold by DX Engineering - don't know the
> > model number but it uses (4) 102 inch whips. It seems very pricey for
> > the system but I am curious. Any homebrew plans around for using (4)
> > 102 inch whips? (they are easy to find and cheap).
> >
> > Gary, N5PHT
>
>Save your money. You can do just as well by using a passive
>transformer to connect the whip to your transmission line.
>I actually tried this in an A/B test with the DX Engineering
>amplifier. You might start with a Mini-Circuits T16-6 which
>will load the antenna with 800 ohms (or if you use RG-6U, 1200
>ohms). That will be within a few dB of optimum sensitivity.
>Try modeling it on EZNEC and you will see what I mean.
Do you do anything special to deal with the huge capacitive
reactance? Or, just assume that the big resistive load swamps it?
>Rick N6RK
>
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