Brian Machesney wrote:
> N6RK wrote:
>
>>> You don't need a 1/4 wavelength = 134 ft. You actually get more gain
>>> with 1/8 wavelength. Less is more. Anything in between is OK too.
>
> So true, but be sure to measure the self- and mutual-driving-point
> impedances to calculate network values that will produce equal currents at
> the phase angles you require. In my experience, not doing so will produce
> disappointing results.
>
> I have successfully use the procedure outlined in Chapter 11, section
> 3.2.2
> of ON4UN's "Low Band DXing" to do this several times.
>
> --
> 73 -- Brian -- K1LI
Rather than going to that trouble, simply tune for maximum
front to back ratio. If you get a 20+ dB null off the back,
you can be sure the currents are equal and at the correct angle.
Rick N6RK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|